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.

A208231 Sum of the minimum cycle length over all functions f:{1,2,...,n}->{1,2,...,n} (endofunctions).

Table of values

n a(n)
0 0
1 1
2 5
3 37
4 373
5 4761
6 73601
7 1336609
8 27888281
9 657386305
10 17276807089
11 500876786301
12 15879053677697
13 546470462226313
14 20288935994319929
15 808320431258439121
16 34397370632215764001
17 1557106493482564625793
18 74713970491718324746529
19 3787792171563440619543133
20 202314171910557294992453009

List of values

[0, 1, 5, 37, 373, 4761, 73601, 1336609, 27888281, 657386305, 17276807089, 500876786301, 15879053677697, 546470462226313, 20288935994319929, 808320431258439121, 34397370632215764001, 1557106493482564625793, 74713970491718324746529, 3787792171563440619543133, 202314171910557294992453009]