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The On-Line Encyclopedia of Integer Sequences® (OEIS®) Wiki

This is the Wiki part of the OEIS

• This Wiki contains a great many pages of information about the OEIS--everything except the sequences themselves. See below.

Navigating

• Important: The main OEIS lookup page is https://oeis.org. Use that page for looking up a sequence, searching the database, contributing new sequences, editing sequences, etc.
• Welcome to OEIS
• Index to OEIS; Other OEIS indexes: constants (very large), factorizations, fractions, recurrences (very large), triangles , polyforms
• Works Citing OEIS.   Quotations about the OEIS
• Register (so you can submit sequences or suggest changes).
• Pictures from the OEIS: The (Free) OEIS Store

Troubleshooting

• Trouble registering, logging in, changing password or email address, remembering name, changing name
• Error messages: Unexpected error while authenticating, Server broke handling request, Proxy error, etc.
• Why am I limited to 3 submissions
• Why are my submissions taking so long to be accepted
• "War and Peace" submissions

Information

• Style Sheet for contributors
• Questions and Answers
• How to add a comment, more terms, or a b-file (short version)
• What is a "pink box" comment?
• AVOID INTERFERING EDITS
• Use of AI for OEIS Submissions
• How to reference the OEIS or a particular entry
• What if I have an idea for new sequences
• Overview of the contribution process
• FAQ for OEIS; OEIS Help Page Have a question about the OEIS? Enter it here!
• Instructions for General Users, Associate Editors, and Editors-in-Chief
• JSON Format
• Compressed Versions of the Database and how to download everything
• Editorial Board
• Registered Users
• How replies to a query are ranked
• Recent additions to OEIS (sequences with keyword "new")
• Awards and press clippings
• Suggested Projects
• Deleted sequences
• About the OEIS banner
• More Pages
• OEIS Log (server esoterica)

Resources

• Videos about OEIS by Neil Sloane: Numberphile videos on YouTube with Brady Haran, 2018-present:
  • Planing Sequences (Le Rabot); A Sequence with a Mistake; Eureka Sequences; The Levine Sequence
  • The Brussels Choice; Dungeon Numbers; (extra); Podcast: The Number Collector
  • Amazing Graphs (I); (II); (III); Don't Know (the Van Eck Sequence); Peaceable Queens
  • How many ways can circles overlap?; The Trapped Knight; Terrific Toothpick Patterns
  • What Number Comes Next?; Primes on the Moon (Lunar Arithmetic)
• Other talks about OEIS by Neil Sloane:
  • Exciting Number Sequences, Rutgers Day, 2021; Richard Guy and the OEIS: A Fifty-Year Friendship, Calgary 2021
  • Conant's Gasket, etc., Rutgers Experimental Math Seminar, 2020; Art and Sequences, Rutgers 2020
  • Old and New Problems from 55 Years of the OEIS, slides, Rutgers EM Seminar, 2019; Coordination Sequences, Planing Numbers, etc., Part 1, 2, Slides, Rutgers EM Seminar, 2019
  • Three (No, 8) Lovely Problems from the OEIS, Part 1, 2, Slides, Rutgers EM Seminar, 2017; Confessions of a Sequence Addict, AofA 2017, Princeton; Winter Fruits: New Problems ..., Part 1, 2, Slides, Rutgers EM Seminar 2017
  • The OEIS, Mathematical Discovery, and Insomnia, London Ontario, 2016; Open Problems in the OEIS, Rutgers, 2016
  • Unsolved Number Theory Sequences from Alekseyev, Meiburg, Resta, van der Poorten, and Pablo Picasso, Part 1, 2, Rutgers EM Seminar, 2015; The Online Encyclopedia of Integer Sequences, Good Ideas in Teaching Precalculus, Rutgers 2015; On the No. of ON Cells in Cellular Automata, Part 1, 2, Rutgers EM Seminar, 2015; Interview by Marc Chamberland, JMM 2015
  • The OEIS Today: The Major Problems, DIMACS Conference to celebrate the 50th birthday of the OEIS, reaching 250,000 sequences, and Neil Sloane's 75th birthday, 2014; Error-Correcting Codes, Group Theory, and Invariant Theory, 1, 2, Rutgers 2014
  • 2178 And All That, Part 1, 2, Rutgers EM Seminar, 2013; On Curling Numbers ..., Toronto, 2013; The On-Line Encyclopedia of Integer Sequences: The First 100 Years, Part 1, 2, Rutgers EM Seminar, 2013
  • The On-Line Encyclopedia of Integer Sequences, Rutgers University, Feb. 2012.

• OEIS software issue tracker
• Concordances to Sequences in Classic Books
• OEIS: The MOVIE
• Alexa, ask OEIS for the digits of pi

The SeqFan mailing list

• Google SeqFan group, email address [email protected] which replaces the old seqfan mailing list.
• SeqFan can be used to discuss interesting sequences, especially open problems, matters concerning the OEIS database and the website, announcements, etc.
• The archives of the SeqFan Google Group are viewable by anyone on the web.
• To join visit https://groups.google.com/g/seqfan and click "Join this group"
• If you don't have a Gmail address, you can still join the group; see the Join a group without a Gmail address section of the following page for instructions: https://support.google.com/groups/answer/1067205
• SeqFan Etiquette

Policy

• Policy concerning pages on the OEIS Wiki
• Good Behavior Guide For Contributors and Editors
• License Agreements, Terms of Use, Privacy Policy
• Complaints About Editing
• Examples of what not to submit

Events

• Integer Sequences K-12 Conference, 2015; Talks at OEIS 50 Workshop, 2014; Suggestions from OEIS 50 Workshop; The 2004 OEIS 100K E-Party
• John Riordan Prize of $1000 for the best solution to an open problem in the OEIS in 2015.

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