cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A058112 Number of isomorphism classes of idempotent semigroups of order n.

Original entry on oeis.org

1, 1, 3, 10, 46, 251, 1682, 13213, 119826, 1228712
Offset: 0

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Author

Christian G. Bower, Nov 09 2000

Keywords

Crossrefs

Main diagonal of A058108 and A058137.
Cf. A027851, A351730 (labeled).

Extensions

Updated Feb 19 2001
a(8)-a(9) added by Andrew Howroyd, Feb 17 2022