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.

A028417 Sum over all n! permutations of n elements of minimum lengths of cycles.

Table of values

n a(n)
1 1
2 3
3 10
4 45
5 236
6 1505
7 10914
8 90601
9 837304
10 8610129
11 96625970
12 1184891081
13 15665288484
14 223149696601
15 3394965018886
16 55123430466945
17 948479737691504
18 17289345305870561
19 332019600921360594
20 6713316975465246889
21 142321908843254560540
22 3161718732648662557161

List of values

[1, 3, 10, 45, 236, 1505, 10914, 90601, 837304, 8610129, 96625970, 1184891081, 15665288484, 223149696601, 3394965018886, 55123430466945, 948479737691504, 17289345305870561, 332019600921360594, 6713316975465246889, 142321908843254560540, 3161718732648662557161]

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

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