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.

A365229 Sum over all k of 1/k! times the number of permutations of [n] for which the difference between the longest and the shortest cycle length is k.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 20
5 85
6 382
7 2219
8 13624
9 100293
10 811914
11 7594015
12 74507490
13 862987151
14 10327793088
15 139175089681
16 1966790900028
17 30983071424315
18 496696984054286
19 8925920862110603
20 162253809011669330
21 3228438870635420315
22 65677024568975412036
23 1448358661756969370985

List of values

[1, 1, 2, 6, 20, 85, 382, 2219, 13624, 100293, 811914, 7594015, 74507490, 862987151, 10327793088, 139175089681, 1966790900028, 30983071424315, 496696984054286, 8925920862110603, 162253809011669330, 3228438870635420315, 65677024568975412036, 1448358661756969370985]

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

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