The OEIS Foundation Inc. is a New Jersey nonprofit corporation(#0101000611; Articles of incorporation filed with the State of New Jersey, April 14 2009; EIN 30-0562250) whose main goals arethe following four items:
- To own the intellectual property known as"The On-Line Encyclopedia of Integer Sequences®"(or"OEIS®").
- To maintain the OEIS as a service that is freely accessibleby the general public.
- To act so as to maintain its own existence indefinitely.
- To collect and distribute funds in order to carry outthe first three goals.
These goals are described in greater detail in alater sectionof this web page,and in theArticles of IncorporationandBylaws.
To facilitate the fourth goal, TheOEIS Foundation Inc. has been approved by theInternal Revenue Service as a charity and a Section 501(c)(3)tax-exempt organization. For details please see the section onTax-exempt status.Tax-deductible donations to The OEIS Foundation Inc.can be made through PayPal using the icon at the top rightof this page (see alsobelow).
Note: Except when used in the name of this corporation(The OEIS Foundation Inc.), the word "OEIS" is an abbreviation for"The On-Line Encyclopedia of Integer Sequences®".
TheOn-Line Encyclopedia of Integer Sequences® (OEIS®)is the on-line version of a database of sequences of numbers whichwill soon be celebrating its 50th anniversary.
A conventional dictionary is a collection of words, together withexplanations of their meanings, hints for their pronunciation,pictures illustrating particular words, examples showing howthe words have been used in books and newspapers, and so on.
The OEIS is a collection of sequences of numbers (such as1, 2, 4, 8, 16, 32, 64, 128, ...) together with, for each sequence, a listof items such as:
- The first 10, or 10,000, or sometimes 500,000 terms of the sequence
- A definition or description of the sequence
- Comments explaining further properties of the sequence
- Formulas for generating the sequence
- Computer programs for generating the sequence
- References to books and articles where the sequence has appeared
- Links to web pages on the Internet where the sequence has appeared
- Cross-references to related entries in the OEIS
- The name of the person who submitted the sequence to the OEIS
- Further names of people who have added additional information about the sequence
- Examples illustrating some of the terms of the sequence (for example, sequenceA124.which gives the maximal number of pieces that can be obtainedwhen cutting a circular pancake with n cuts, is illustrated with picturesshowing the pieces obtained with n = 1, 2, 3, 4 and 5 cuts)
- The history of each sequence in the OEIS as it has evolved over time
- Users of the OEIS may also view graphs or plots of each sequence,or to listen to the sequence when it is converted to music
The OEIS currently contains just over 200,000 entries. These have been distilled from manysources - books, journals, articles, and letters and electronic mail messagesfrom thousands of contributors. Since November 11, 2010, users have been able toenter contributions directly into the OEIS (all such contributions are refereed).
The main use for the OEIS is to identify a number sequencethat you have come across, perhaps in your work, while reading a book,or in a quiz, etc.
For example, you discover what you think may be a new algorithm forchecking that a file of medical records is in the correct order.(Perhaps you are a computer scientist or someone working in information science.)
To handle files of 1, 2, 3, 4, ... records, your algorithm takes0, 1, 3, 5, 9, 11, 14, 17, 25, ... steps.
How can you check if someone has discovered this algorithm before?You decide to ask the OEIS if this sequence has appeared beforein the scientific literature.
You go the OEIS web site, enter the numbers you have calculated,and click "Submit".
The reply tells you that this is sequenceA3071,which is the number of steps needed for "sorting by list merging",a well-known algorithm.The entry directs you to Section 5.3.1 of Volume 3 ofD. E. Knuth, "The Art of Computer Programming", where you find youralgorithm described. The entry even gives an explicit formula for the nth term.You decide not to apply for a patent!
The OEIS web site includes alistof well over 3000 books and articlesthat have acknowledged help from the OEIS.
For further information about the OEIS, see theOEIS Welcome Page,theLookup Page,theDemonstration Pages,or theWikipedia article.
The collection was begun by Neil J. A. Sloane (henceforth, "NJAS")in 1964 when he was a graduate student at Cornell Universityin Ithaca NY. He had encountered a sequence of numbers while workingon his dissertation, namely 1, 8, 78, 944, ... (now entryA435.in the OEIS),and was looking for a formula for the n-th term, in order todetermine the rate of growth of the terms.
He noticed that although several books in the Cornell library containedsequences somewhat similar to this, this particular sequencewas not mentioned.In order to keep track of the sequences in these books, NJAS startedrecording them on file cards, which he sorted into lexicographic order.
The sequences were transferred to punched cards in 1967, and weremade into a book in 1973 ("A Handbook of Integer Sequences", by NJAS,Academic Press, NY).
NJAS joined AT&T Bell Laboratories in 1969. Following the publication ofthe book, a large amount of correspondence ensued, with suggestionsfor further sequences and updates to the existing entries. Manypeople remarked how useful they found the book, and how surprisingit was that no one had published such a collection before.
By the early 1990's over a cubic meter of of correspondence had accumulated.A Canadian mathematician, Simon Plouffe, offered to help inpreparing a revised edition of the book, and in 1995 "The Encyclopediaof Integer Sequences", by NJAS and Simon Plouffe, was publishedby Academic Press, San Diego.(Simon Plouffe is now one of theTrusteesof The OEIS Foundation Inc.)The 1973 book contained 2372 sequences, and the 1995 book 5487 sequences,occupying 587 pages.
Again, once the book appeared, many further sequences and updates weresubmitted from people all over the world. NJAS waited a year, until thesize of the collection had doubled, to 10,000 entries, and then in 1996he launched theOn-Line Encyclopedia of Integer Sequenceson the Internet.From 1996 until November 11, 2010, this was part of NJAS's home pageon theAT&T Labs Web Site.
Since 1996, the collection has grown by 10,000 to 18,000 entries per year.At the present time (May 29, 2013) there are 225,735 entries.If it were to be published in book form today, it would requireat least 750 volumes the size of the 1995 book.
Starting in 2002, NJAS added a group of associate editors to helpprocess submissions to the OEIS. However, because they did nothave access to the computer where the OEIS was maintained,almost all the work of updating it had to be done single-handedly by NJAS.This involved processing 100 or 200 emails every day, and was getting to bebeyond what one person could handle.
In January 2009, therefore, it was decided to make a drastic change. We (NJAS and the associate editors) made a plan to convertthe OEIS into a "wiki" format, somewhat along the lines of thewell-known Wikipedia, which would be hosted by a commercial hosting service. (A copy of a letter of consent from AT&T agreeing to this course of actionis available on request from NJAS.)It was also decided to set up the OEIS Foundation,the goals of which would be to own,maintain and raise funds to support the new version of the OEIS.
Most of this went smoothly.The OEIS Foundation Inc. was incorporated in the State of New Jerseyon April 14, 2009.We rented space on a commercial hosting service,and tried to move the OEIS to the new site.
Here, however, we ran into a very serious problem.In the summer of 2009, when we tried to get the OEIS working as a wiki,we discovered that the Mediawiki software was not capableof handling the kind of queries that arise in looking up sequences.This was a disaster.
It took us over a year to resolve this problem.In the end,Russ Cox completely rewrote all the programs needed to maintain the database and answer queries - a huge task!NJAS's colleague David Applegatehas also been of enormous help in getting the newsystem working.
As a result of their work, the newOEISwas finally launched on November 11, 2010.(For more details, see the attachedannouncement.)
It is now possible for anyone in the world to propose a new sequence oran update to an existing sequence. To do this, users must firstregister.A group of about 70editorshas been formed, whose job it is to review submissions beforethey become a permanent part of the OEIS.
So, after nearly two years of struggle, the OEIS can finallyoperate without NJAS having to approve every change.After 46 years of running the database, this comesas a great relief to him.
As mentioned in the previous paragraph, the OEIS was successfullylaunched in its new home (http://oeis.org)on November 11, 2010. At this time it contained 180,284 sequences.
In the first full year of operation,from Nov 11 2010 to Dec 1 2011, 19716 new sequenceswere accepted, an average of over 50 per day,and there were about 250 edits per day of existing sequence.
We now have over 20 Editors-in-Chief and over 80 Associate Editors,and about 2000 registered users (seeherefor these lists).
The following is a summary of the trafficon the new web site for the month of December 2010.The first four columns are the daily average, the last six columns are the total for the month.
| Hits | Files | Pages | Visits | | | Sites | KBytes | Visits | Pages | Files | Hits |
| 164491 | 93721 | 141310 | 8290 | | | 84612 | 40341570 | 257006 | 4380636 | 2905370 | 5099232 |
The Wiki part of the new OEIS can be found athttp://oeis.org/wiki.
SequenceA200000was added on November 20, 2011: this is an interesting sequence concerning paths (or "meanders") through a grid.
We reached 200000 sequences at midnight on December 1, 2011, the 200000-thsequence beingA201463: see thePress release.
The goals are repeated here, giving further details about each one.
(1) To own the intellectual property known as "The On-LineEncyclopedia of Integer Sequences" (or "OEIS").
Added October 28, 2009: NJAS has nowtransferred his intellectual property in the OEISto The OEIS Foundation Inc.For details seebelow.
(2) To maintain the OEIS as a service that is freely accessibleby the general public.
Thenew version of the OEIS launchedon November 11, 2010 (see theannouncement)can be accessed on the Internet free of chargeby anyone in the world. It hasthe form of a "moderated wiki". Any registered user (andregistrationis free) can propose new sequencesor modifications to existing entries. However, these proposals will notbecome a permanent part of the OEIS until they have been approvedby a member of the Editorial Board.
People without access to the Internet can consult the OEISvia two freeemail services.
One of the responsibilities of The OEIS Foundation Inc. is to keepthe new version of the OEIS,(or, in future years, whatever replaces it) up and running24 hours a day, seven days a week. This will of course require maintainingall the computer programs that underlie the OEIS.
(3) To act so as to maintain its own existence indefinitely.
The trustees are to serve for a period of three years, withthe option of unlimited renewals.
The trustees are to elect the officers, and new membersmay be added as the needs of the OEIS evolve.
The trustees are also to monitor the performanceof the Editorial Board of the OEIS.
It is hoped that the OEIS will survive into the distant future,and the Trustees of The OEIS Foundation Inc. are charged with taking"the long view". This will include evolving the medium in which theOEIS is stored when that becomes necessary.Over the past 46 years the medium in which the OEIS has beenstored has changed from file cards to punched cards to magnetic tapeto magnetic disks, and no doubt further changes will be required in the future.
A list of members of theBoard of Trustees may be foundhere.
(4) To collect and distribute funds in order to carry outthe first three goals.
It is intended that The OEIS Foundation Inc. will bea charity and a Section 501(c)(3) tax-exempt organization. An application for tax-exempt status was filed with the InternalRevenue Service on July 2, 2009.Tax-exempt status was granted on September 10, 2009 (see thefollowing section).
Initially the expenses will be the costs involved with settingup The OEIS Foundation Inc., filing for tax-exempt status, and in maintainingthe wiki version on a web hosting site.Additional expenses will arise from publicizing the Foundation atscientific meetings.
Future expenses may include paying salaries to people to maintain the OEIS.
The OEIS Advisory Board was created on May 7, 2013,with the goal of having a group of distinguishedscientists that theBoard of Trusteesand other members of the OEIS community can call upon for advice and guidance on matters related to the OEIS or the OEIS Foundation.
A list of the initial members of theAdvisory Board may be foundhere.
The Advisors will be invited to participate in meetings of the Board of Trustees, and to vote on resolutions, although their votes will not be counted in the official tally.
To begin with, members may be added to orremoved from the Advisory Boardby the President after consultation with the Board of Trustees.Initially there will not be a fixed term for Advisory Boardmembers.
At some later time, the make-up of the Advisory Board maybe added to the By-Laws.
We applied for tax-exempt status in the USA for The OEIS Foundation Inc. on July 2, 2009.Here is a copy of theIRS Form 1023that we submitted,and of an attachment containingdetailed responsesto certain sections of that form.
On August 22, 2009, we received aletter from the IRSrequesting additional information and clarification of certain points.
Neil J. A. Sloane replied on August 26, 2009, providing answers tothese questions. His letter can be seenhere.
On September 10, 2009, the IRS approved our request.Their letter can be seenhere.
The important points are as follows:
- The OEIS Foundation's tax identification number or EIN is 30-0562250.
- Effective Date of Exemption: April 14, 2009. Accounting Period Ending: December 31.
- The OEIS Foundation Inc. is exempt from Federal income tax under section 501(c)(3) of the Internal Revenue Code.
- Contributions to the Foundation are deductible under section 170 of the Code.
- The Foundation is also qualified to receive tax deductible bequests, devises,transfers or gifts under section 2055, 2106or 2522 of the Code.
- The IRS has determined that the Foundation is a public charity undersection 170(b)(1)(A)(vi) of the Code.
We are very grateful to Nancy Eberhardt, Esq., Director of theNew Jersey Program of the Pro Bono Partnership, for her invaluable helpwith all the legal matters involved in setting up and registeringthe OEIS Foundation.
We also thank Terry Ilardi, Esq., Copyright Counsel for the IBM Corporation(working "Pro Bono") who drafted the two license agreements that are being used with the OEIS Wiki:theOEIS Contributor's License Agreementand theOEIS End-User License.The OEIS Foundation is very grateful to him for his help.
The following is a slightly edited version of anannouncement that NJAS made on October 27 2009to the Trustees of The OEIS Foundation Inc.
Yesterday (Monday, October 26 2009) was a landmark day in the history of the OEIS. I transferred the intellectual property I own in the OEIS to The OEIS Foundation Inc.The letter of assignment can be seenhere.To make the transfer precise, my colleague David Applegate and I burned a DVD containing a snapshot of the whole OEIS (the sequences, of course,as well as all the associated files), which accompanies theletter of assignment as Exhibit A.
The DVD contains about 1.4GB. The main sequence filecontains 164891 sequences. It is 2510785 lines long andcontains 169521003 characters. There are also 10716 b-files,and the b-files and other similar files comprise 852M.Another 280M are files associated with the lookup process.
I am grateful to Terry Ilardi, Esq., of IBM Corporation (working "Pro Bono") whodrafted the letter of assignment, and to David Applegate for help in creating the DVD.
On June 16, 2010, we filed applications to trademark "On-Line Encyclopedia of Integer Sequences"and "OEIS" with the United States Patent and Trademark Office.We are very grateful to Debra A. Shelinsky Greene, Esq., Counsel,and Florence M. Niel Henits, Trademark Paralegal, both of theTrademarks and Copyrights division, Merck & Co., Inc., working "Pro Bono",who filed the applications on behalf of The OEIS Foundation.
"OEIS" was registered on February 8, 2011, as a United StatesTrademark (Registration Number 3,916,748).A copy of the certificate can be seenhere.TheReverse side of Certificate of Registrationlists requirements that we must fulfill during 2011-2021.SeeAnnual reminders.
"THE ON-LINE ENCYCLOPEDIA OF INTEGER SEQUENCES" was registered on December 20, 2011, as a United StatesTrademark (Registration Number 4,072,712).A copy of the certificate can be seenhere.TheReverse side of Certificate of Registrationlists requirements that we must fulfill during 2011-2021.SeeAnnual reminders.
At the Board of Trustees meeting on June 8, 2010,it was unanimously agreed to establish a Fundraising Committee.The goal of the committee is to raise money to supportthe OEIS Foundation and the On-Line Encyclopedia ofInteger Sequences (the OEIS).
In particular, the goals of the Fundraising Committee are, first,to raise funds to to cover the day-to-day expenses of running the OEIS,and, second, to build up a reserve fund to ensure the long-term stabilityof the OEIS.For information about the current OEIS Foundation budget, pleaseclickhere.
The committee was formed on August 29, 2010, the initialmembers being Marc LeBrun (Trustee, OEIS Foundation, Chair),Ron Graham (Trustee, OEIS Foundation), T. D. Noe (Treasurerof the OEIS Foundation) and Neil J. A. Sloane (President of the OEIS Foundation).Further members may be added later, including persons who arenot necessarily Trustees of the OEIS Foundation.
The Board of Trustees agreed to adopt the term "Advisor" to refer to peoplewho actively participate in fundraising or make similarcontributions to the operation of the OEISF, but aren't necessarily Trustees of the OEIS Foundation or Editors of the OEIS.
Committee members shall be appointed by the President of the OEIS Foundation,and members shall serve for two years, unless reappointed.
Donations to The OEIS Foundation Inc. (tax-deductible in the USA) can be made in three ways:
- Through PayPal, using the icon at the top right of this page.
- Directly, with a check or money order made out to The OEIS Foundation Inc., and sent to:
Tony D. Noe,
Treasurer, The OEIS Foundation Inc.,
14025 N.W. Harvest Lane,
Portland, OR 97229, USA
- Directly, by a wire transfer to the OEIS Foundation bank account.For information on how to do this, please contact Tony Noe (treasurer(AT)oeisf.org) or Neil J. A. Sloane (president(AT)oeisf.org).
Keep in mind that many corporations have a fund-matchingprogram - they will match your charitable contributions.This is an excellent way to double your donationto the OEIS Foundation!
All donations will be gratefully acknowledged on this page.
The OEIS Foundation's tax identification number or EIN is 30-0562250.
AT&T has supported the OEIS almost from its beginning,by allowing Neil J. A. Sloane to maintain it from 1969 onwards and to host it on his AT&T Labs home page from 1996 through 2010;and also by allowing David Applegate to contributehis services towards maintaining the operation of theOEIS on Neil J. A. Sloane's web site at AT&T Labs and from 2010 onwards in itsnew home.
The OEIS Foundation Inc. is also very grateful to the following donors:
Donors in 2013
Benefactors in 2013 (Gifts of $5000 and above):
Anonymous
David Scambler
N. J. A. Sloane
Sponsors in 2013 (Gifts of $1000 and above):
Anonymous
Russ Cox
Fred Kline
Jill C Knuth
Tony D. Noe
Patrons in 2013 (Gifts of $100 and above):
Jean-Francois Alcover David Applegate Mira Bernstein Ray Chandler Charles K. Cook Donald Craig Gary Croft David Crookes Leo Depuydt Robert Dickau Federico Echenique (in honor of Doron Zeilberger) Christopher Gribble Ed Jeffery William Keith Clark Kimberling Ron Knott Marc LeBrun Stéphane Legendre Francis Maleval Charles Marion Johannes Meijer Kival Ngaokrajang Omar Evaristo Pol Jeffrey Remmel Steve Roberts Brian N Scott Aksel Soee Ralf Stephan Paul K. and Bonita K. Stockmeyer Timothy Vaughan David Wilson Eric Wolman Doron Zeilberger (on behalf of the many corrections and solutions of challenging problems by students in hisclass) Doron Zeilberger (in honor of Josh Smith, Rutgers University Math Dept's dedicated computer guru) Reinhard Zumkeller
Friends in 2013 (Gifts of less than $100):
Mohammad Azarian Michael Behrend Jonathan Bright Bruce Dearden Eric Desbiaux David Edwards James L Farrington Silvio Gnepf Rick Gutleber Maryann Haskell Enrique P�rez Herrero Stewart Herring Mamuka Jibladze David Johnston Lucy Ann Jones Michael Kaarhus Alvin Khaled Tanya Khovanova Anthony Labarre Wolfdieter Lang Silvio Levy Makefoil Ebooks Peter Mao Joseph Marasco John Miller David Moews Mircea-Cristian Nuca Christian Perfect Boris Putievskiy Robert Tanniru Seth Troisi Mark Underwood Willy Van den Driessche Jeroen van der Burg Mike Weiner Shi Yong
The OEIS Foundation Inc. is also grateful to theAmerican Mathematical Society for facilitating our access toMathSciNet in 2013 and 2014.
Donors in 2012
Benefactors in 2012 (Gifts of $5000 and above):
Joerg Arndt
Neil J. A. Sloane
Sponsors in 2012 (Gifts of $1000 and above):
The American Mathematical Society
Anonymous
Russ Cox
Paul Curtz
Charles R Greathouse IV
Jill Knuth
Tony D. Noe
Patrons in 2012 (Gifts of $100 and above):
David Applegate Peter Bala Manuel Blum Benjamin Chaffin Ray Chandler/Dell Giving Benoit Cloitre Donald Craig David Crookes Emeric Deutsch Tom Duff Robert Dickau Rémi Eismann Gardenia Giacoman Google Matching Gifts Program Xan Gregg Claus Johansen Clark Kimberling Michael Kleber Peter Klimek Fred Kline Kenneth Knowlton Jaume Oliver Lafont Charles F. Marion James McCarron John F. Morack Omar Evaristo Pol George Purdy Albert Renshaw Brian M. Scott Richard P. Stanley Vinay Vaishampayan Matthew Vandermast Robert G. Wilson, v Doron Zeilberger Reinhard Zumkeller
Friends in 2012 (Gifts of less than $100):
Jean-Francois Alcover Stuart Anderson Mohammad Azarian Ralph Baggett Michael Behrend Lawrence Biroff Matthew Brin Michael Cavers Tyler Curtain Eames Demetrios Dave Durgin Patrick Ekman Yuval Filmus Anant Godbole Enrique Pérez Herrero Frank M. Jackson Loic Jegouzo Vaclav Kotesovec Leonid Kovalev Wolfdieter Lang Robert Lyons Matevz Markovic Antonio Roldán Martínez Lance Menthe John W. Morse Eric Moyer Joan New Kival Ngaokrajang Emily Norton David Penman Tibor Djurica Potpara Robert Price Manda Riehl Rainer Rosenthal Marc Rosner Albert Rossinski Roland Schröder Richard Schroeppel Keith Smith Anatol Tirkel Tan You Tong Patrick Warren Thomas Wieder Wilhelm Wijkander Joshua Zucker
The OEIS Foundation Inc. is also grateful to theAmerican Mathematical Society for facilitating our access toMathSciNet in 2012.
Donors in 2011
Benefactors in 2011 (Gifts of $5000 and above):
Sponsors in 2011 (Gifts of $1000 and above):
Bruno Berselli
Donald and Jill Knuth
Tony D. Noe
Neil J. A. Sloane
Patrons in 2011 (Gifts of $100 and above):
Matt C. Anderson Anonymous Martin Betz Pierre CAMI Ray Chandler Benoit Cloitre Russ Cox David Crookes Paul Curtz Harvey P. Dale Carl de Marcken Dell Giving (Matching Fund) Emeric Deutsch Dan Drake Jeremy Gardiner Olivier GERARD Google Matching Gifts Program Toby Gottfried Xan Gregg Christopher Gribble Alois Heinz Wolfgang Hintze Donovan Johnson Antti Karttunen Clark Kimberling Fred Kline Leonid Kovalev Marc LeBrun Shawn Ligocki Stephen Marak Charles F. Marion Johannes Meijer Will Nicholes Paul Nick Ed Pegg, Jr. Enrique Pérez Herrero Thane Plambeck Omar Pol Bradley Robinson Phil Rutschman Bill Sanford David Scambler Bent Schmidt-Nielsen Brian M. Scott Allen Stenger William D. Tisdale Vinay Vaishampayan David W. Wilson Robert G. Wilson, v Reinhard Zumkeller
Friends in 2011 (Gifts of less than $100):
Jeremy Albright Jean-François Alcover Gadi Aleksandrowicz Anonymous David L. Applegate Mohammad K. Azarian Gary Baydo Gerard Blais David Brown Marvin Ray Burns Alessandro De Luca Joel Dubiner Theresia Eisenkoelbl Patrick C. Ekman Ruy Fabila Wei Fang Richard Grafen Mats Granvik JoAnne Growney Paul Hanna Stewart Herring Meyer Jacobs Ed Jeffery Sudhir Jha David Russell Johnston Carel Jonkhout Ilmari Karonen William Keith Fred Kline Przemyslaw Kobylanski Mikko Korhonen Vaclav Kotesovec Peter Kosinar Denis Krotov Wolfdieter Lang John W. Layman David Madore Peter Mao William McEachen Lorenz Milla Kerry Mitchell Alejandro Henry Morales Susan Murray David Nacin Philip Newton Tibor Djurica Potpara Andrew Poynter James Raymond Gerhard Riphagen Andrew Rodland Rainer Rosenthal Matthew Samuel Richard Schroeppel Zechao Shang Louis Shapiro Bob Smith Pieter Stadhouders Einar Steingrimsson William Summer Lenny Tevlin Willy Van den Driessche Sjoerd Visscher Al Vilcius Christof Weber Dennis P. Walsh Susanne Wienand Mike Weiner Robin Whitty
Donors in 2010
The OEIS Foundation Inc. thanks theElwyn and Jennifer Berlekamp Fund at the East Bay Community Foundation for a very generous grant for General Support, on June 23 2010.
The OEIS Foundation Inc. is grateful toMarc LeBrun for two very generous donations on Nov. 23 2009 and April 7 2010, and toAdobe Systems Inc. for matching his donations.
Anonymous (2) Gary W. Adamson David L. Applegate Mohammad K. Azarian The Elwyn and Jennifer Berlekamp Fund at the East Bay Community Foundation Benoit Cloitre David Crookes Eric Desbiaux Emeric Deutsch Robert Dickau Rémi Eismann Jeremy Gardiner Christopher Gribble Paul Hanna George Hart Dan Kalman Antti Karttunen Reed Kelly Clark Kimberling John Layman Marc LeBrun Kevin McCoy Kerry Mitchell Tony D. Noe Thane Plambeck Christopher Rebert Rich Schroeppel Sven Simon Neil J. A. Sloane Paul K. and Bonita K. Stockmeyer Kent Vander Velden Thomas Wieder
Donors in 2009
Ray Chandler Jeremy Gardiner Ronald and Fan Graham Christopher Gribble Brian Hayes Marc LeBrun Charles F. Marion Pacha Nambi Tony D. Noe Warut Roonguthai Rainer Rosenthal Neil J. A. Sloane Andrew Weimholt Thomas Wieder Reinhard Zumkeller
- The Board of Trustees of the OEIS Foundation Inc. must hold a boardmeeting at least once each year.
The meeting may be electronic as long as all trustees participate.
Board meetings were held on June 29, 2009; July 6, 2009; December 22, 2009;June 8 2010, November 29, 2011; February 16, 2012; February 19, 2013; June 28, 2013. - The OEIS Foundation Inc. must file an income tax statementwith the Internal Revenue Service of the USA once a year.Provided the gross receipts are $50,000 or less, the Foundation can usethe e-Postcard Form 990-N. The fiscal year for the OEIS Foundation Inc.runs from January 1 to December 31. The tax statement mustbe filed by April 30 of the following year.The Foundation's Employee Identification Number (EIN) is 30-0562250.See the Foundation'sIRS Form 990-N for 2009,IRS Form 990-N for 2010,IRS Form 990-N for 2011,IRS Form 990-N for 2012.
- The OEIS Foundation Inc. must renew its registration as a New Jersey charity each year.Provided the gross receipts are $25,000 or less, the Foundation can usethe Short-Form Registration/Verification Statement Form CRI-200.See links to copies of our NJ Division of Consumer Affairs Forms CRI-200 for earlier years at the top of this web page.To download the blank form, go to http://www.njconsumeraffairs.gov/ocp/charities.htm, thenRegistration Forms and Instructions, thenscroll down to CRI-200 Short Form.The Foundation's N.J. Charities Registration Number is CH-3228900.
- The OEIS Foundation Inc. must file an annual report with the State of NJ, Dept. of the Treasury, Division of Revenue, each year.
To do this, go to www.nj.gov/treasury/revenue/,click on "I want to",and go to "File Annual Reports".
Three things must be filled in on the first page:
NJ 10-digit ID: 0101000611
Type of Entity: NP
Formation Date: 04/2009
On July 19 2011, Neil J. A. Sloane did this and paid 2 X $25 = $50 for 2010 and 2011.On July 3 2012, Neil J. A. Sloane did this and paid $25 for 2012 (seeReceipt).On Feb. 6 2013, Neil J. A. Sloane did this and paid $25 for 2013.
- TheReverse side of Certificate of Registrationof the trademark "OEIS"lists requirements that the Foundation must fulfill during 2011-2021.(1) The Foundation must file a Declaration of Use between February 8, 2016 and February 8, 2017.(2) The Foundation must file a Declaration of Use and an Application for Renewal between February 8, 2020 and February 8, 2021.
- TheReverse side of Certificate of Registrationof the trademark "THE ON-LINE ENCYCLOPEDIA OF INTEGER SEQUENCES"lists requirements that the Foundation must fulfill during 2011-2021.(1) The Foundation must file a Declaration of Use between December 20, 2016 and December 20, 2017.(2) The Foundation must file a Declaration of Use and an Application for Renewal between December 20, 2020 and December 20, 2021.
To celebrate the launching of theOEISFoundation,Tony Noe made an 8.5-minute movie showing the first 1000 terms of 1000sequences,with soundtrack from Recaman's sequenceA5132.There are four ways to view the movie:
- OnYouTube(you can always find it by searching for "OEIS Movie").
- By downloading a5 MB QuickTime moviethat is viewable with QuickTime Player 7 and some browsers.
- By downloading a27 MB movie thatuses the H264 codec and AAC sound. This movie is viewable on recentversions of Windows Media Playerand most up-to-date browsers.
- Going toTonyNoe's website for aframe-by-frame display, with links to the OEIS definition of each sequence.
(Incidentally, you can convert the movie to just about any other format athttp://www.media-convert.com,without downloading any software).
For financial matters, direct contributions, donations, please contact:
Tony D. Noe,
Treasurer, The OEIS Foundation Inc.,
14025 N.W. Harvest Lane,
Portland, OR 97229, USA
Email address: treasurer(AT)oeisf.org or noe(AT)sspectra.com
For anything else, please contact:
Neil J. A. Sloane,
President,
The OEIS Foundation Inc.,
11 South Adelaide Avenue,
Highland Park, NJ 08904, USA
Email: president(AT)oeisf.org or njasloane(AT)gmail.com. Phone: (732) 828 6098.
This page is maintained by Neil J. A. Sloane, President, The OEIS Foundation Inc.
2009:Created on Aug 25, 2009.Update about IRS tax-free status added Sep 17, 2009.Links to poster and key to poster added Oct 1, 2009.Updates about the transfer of IP in OEIS to The OEIS Foundation Inc. added Oct 28, 2009.Press release added Nov 14, 2009.Letter confirming NJ tax-exempt status added Nov 17, 2009.List of donors was begun on Dec 2, 2009.Information about registering as a NJ charity added Dec 8, 2009.Budget for 2009-2010 revised Dec 20, 2009.The bylaws were amended and five governance policies were adopted at the Board of Trustees meeting on Dec 22, 2009.
2010:Information about the license agreements for users of the OEIS Wiki was added Feb 13, 2010.Information about the OEIS movie updated Mar 12 2010.Information about the OEIS Wiki updated Jun 8, 2010.Information about the June 8, 2010 Board of Trustees meeting added Jun 10, 2010Information about applying for trademarks added Jun 18, 2010.Information about posters revised Jun 26, 2010.Information about Fundraising Committee revised, Aug 29, 2010.Information about thenew OEIS added Nov 22, 2010.
2011:Status report on new OEIS added Jan 12 2011 and updated Jan 18 2011.Apr 23, 2011: Added copies of income tax returns for 2009 and 2010. Added section about annual reminders. Updated information about trademarks.May 8, 2011: Divided list of donors (for 2011 onwards) into four categories. Added copy of NJ Form CRI-200 for 2010.Dec 3, 2011: AddedPress release about reaching 200,000 sequences.Dec 5, 2011: Added dates on which meetings of the Board of Trustees have been held.
2012:Jan 11, 2012: Added information about the approval of the second trademark application.Jan 24, 2012: Minor editorial and formatting changes.Feb 2, 2012: Following a suggestion from Günther Leenaert, reformatted page in css style with assistance from AT&T colleague Farheen Masood.Feb 16, 2012: Financial report for 2011, budget for 2012, new trustees (Greathouse and Munafo).Mar 26, 2012: Added information about 2011 income tax return.Jul 21, 2012: Added copy of NJ Form CRI-200 for 2011.
2013:Feb 19, 2013: Added financial report for 2012.Feb 25, 2013: Added information about board meeting held Feb 19 2013.Apr 1, 2013: Added information about 2012 income tax return.Apr 14, 2013: Added copy of NJ Form CRI-200 for 2012.May 7, 2013: Added information about Advisory Board.
