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.

A289950 Number of permutations of [n] having exactly two nontrivial cycles.

Table of values

n a(n)
4 3
5 35
6 295
7 2359
8 19670
9 177078
10 1738326
11 18607446
12 216400569
13 2721632121
14 36842898989
15 534442231933
16 8273657327788
17 136186274940140
18 2375469940958988
19 43774887758841996
20 849887136894382191
21 17340752094929572431
22 370979946172969657107
23 8304215235537338992931

List of values

[3, 35, 295, 2359, 19670, 177078, 1738326, 18607446, 216400569, 2721632121, 36842898989, 534442231933, 8273657327788, 136186274940140, 2375469940958988, 43774887758841996, 849887136894382191, 17340752094929572431, 370979946172969657107, 8304215235537338992931]

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

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