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.

A027617 Number of permutations of n elements containing a 3-cycle.

Table of values

n a(n)
0 0
1 0
2 0
3 2
4 8
5 40
6 200
7 1400
8 11200
9 103040
10 1030400
11 11334400
12 135766400
13 1764963200
14 24709484800
15 370687116800
16 5930993868800
17 100826895769600
18 1814871926067200
19 34482566595276800
20 689651331905536000
21 14482682605174784000
22 318619017313845248000

List of values

[0, 0, 0, 2, 8, 40, 200, 1400, 11200, 103040, 1030400, 11334400, 135766400, 1764963200, 24709484800, 370687116800, 5930993868800, 100826895769600, 1814871926067200, 34482566595276800, 689651331905536000, 14482682605174784000, 318619017313845248000]

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

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