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.

A284458 Number of pairs (f,g) of endofunctions on [n] such that the composite function gf has no fixed point.

Table of values

n a(n)
0 1
1 0
2 2
3 156
4 16920
5 2764880
6 650696400
7 210105425628
8 89425255439744
9 48588905856409920
10 32845298636854828800
11 27047610425293718239100
12 26664178085975252011318272
13 31009985808408471580603417296
14 42017027730087624384021945067520

List of values

[1, 0, 2, 156, 16920, 2764880, 650696400, 210105425628, 89425255439744, 48588905856409920, 32845298636854828800, 27047610425293718239100, 26664178085975252011318272, 31009985808408471580603417296, 42017027730087624384021945067520]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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