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.

A245503 Number of endofunctions f on [n] such that f^7(i) = f(i) for all i in [n].

Table of values

n a(n)
0 1
1 1
2 4
3 21
4 142
5 1131
6 10422
7 112015
8 1396516
9 19702665
10 306547426
11 5177584809
12 94168757916
13 1833590759131
14 38009888806450
15 835064706091431
16 19389119390412448
17 475039405292487825
18 12263445905182200882
19 332913448508180564521
20 9478703390668813103836

List of values

[1, 1, 4, 21, 142, 1131, 10422, 112015, 1396516, 19702665, 306547426, 5177584809, 94168757916, 1833590759131, 38009888806450, 835064706091431, 19389119390412448, 475039405292487825, 12263445905182200882, 332913448508180564521, 9478703390668813103836]

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

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