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[Source file for this Index.]


  • A highly selective index to the On-Line Encyclopedia of Integer Sequences.
  • The principal sequences are marked by asterisks (*). See also the list of "core" sequences.
  • The goal here is to try to group the principal sequences into categories, to make it easier to locate sequences dealing with a particular topic.
  • If you don't find what you are looking for here, you can always search the database for a particular word. There is also a separate Index to Fractions.
  • Entries with a double colon (::) are from the index to the 1995 book The Encyclopedia of Integer Sequences, by N. J. A. Sloane and Simon Plouffe. Some of these entries are now out of date.
  • Suggestions for additional entries will be welcomed.

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Last modified November 20 10:07 EST 2017. Contains 294963 sequences.