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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.

A239785 Number of pairs of functions (f,g) from a set of n elements into itself satisfying f(g(g(x))) = f(g(x)).

Original entry on oeis.org

1, 1, 14, 411, 19912, 1412745, 136537056, 17121680443
Offset: 0

Views

Author

Chad Brewbaker, Mar 26 2014

Keywords

Crossrefs

Cf. A181162.

Extensions

a(6)-a(7) from Giovanni Resta, Mar 28 2014

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