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.

A346121 Number of permutations of [n] whose order is a multiple of n.

Table of values

n a(n)
1 1
2 1
3 2
4 6
5 24
6 240
7 720
8 5040
9 40320
10 816480
11 3628800
12 108108000
13 479001600
14 14789174400
15 254431457280
16 1307674368000
17 20922789888000
18 872545722048000
19 6402373705728000
20 411616608508385280
21 7817896752906240000
22 128126503414990080000
23 1124000727777607680000

List of values

[1, 1, 2, 6, 24, 240, 720, 5040, 40320, 816480, 3628800, 108108000, 479001600, 14789174400, 254431457280, 1307674368000, 20922789888000, 872545722048000, 6402373705728000, 411616608508385280, 7817896752906240000, 128126503414990080000, 1124000727777607680000]

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

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