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.

A245505 Number of endofunctions f on [n] such that f^9(i) = f(i) for all i in [n].

Table of values

n a(n)
0 1
1 1
2 4
3 19
4 116
5 901
6 8422
7 89755
8 1066088
9 14154409
10 212952266
11 3646226959
12 69912304156
13 1460516349709
14 32480282189006
15 759186766079011
16 18569220500830928
17 475114325555073745
18 12719547174925542034
19 356098625214192355735
20 10413932958067814029316

List of values

[1, 1, 4, 19, 116, 901, 8422, 89755, 1066088, 14154409, 212952266, 3646226959, 69912304156, 1460516349709, 32480282189006, 759186766079011, 18569220500830928, 475114325555073745, 12719547174925542034, 356098625214192355735, 10413932958067814029316]

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

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