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.

A245981 Number of pairs of endofunctions f, g on [n] satisfying g^4(f(i)) = f(i) for all i in [n].

Table of values

n a(n)
0 1
1 1
2 10
3 213
4 9592
5 682545
6 69119136
7 9284636221
8 1597922254720
9 344058384011553
10 90769698354764800
11 28762381447366581861
12 10751918763610399942656
13 4671451080680229243978385
14 2331208959412708894563057664
15 1323549917511104579568688414125

List of values

[1, 1, 10, 213, 9592, 682545, 69119136, 9284636221, 1597922254720, 344058384011553, 90769698354764800, 28762381447366581861, 10751918763610399942656, 4671451080680229243978385, 2331208959412708894563057664, 1323549917511104579568688414125]

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

Content is available under The OEIS End-User License Agreement.