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.

A291112 Number of endofunctions on [n] such that the LCM of their cycle lengths equals six.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 20
6 840
7 26250
8 773920
9 23166360
10 724253040
11 23921630810
12 838352908800
13 31203417745500
14 1232550480801640
15 51590674307982810
16 2283883442833836480
17 106713738151299297200
18 5251783507905871571040
19 271673904611812139017650
20 14743195769771119241426080

List of values

[0, 0, 0, 0, 0, 20, 840, 26250, 773920, 23166360, 724253040, 23921630810, 838352908800, 31203417745500, 1232550480801640, 51590674307982810, 2283883442833836480, 106713738151299297200, 5251783507905871571040, 271673904611812139017650, 14743195769771119241426080]

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

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