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.

A052502 Number of permutations sigma of [3n] without fixed points such that sigma^3 = Id.

Table of values

n a(n)
0 1
1 2
2 40
3 2240
4 246400
5 44844800
6 12197785600
7 4635158528000
8 2345390215168000
9 1524503639859200000
10 1237896955565670400000
11 1227993779921145036800000
12 1461312598106162593792000000
13 2054605512937264606871552000000

List of values

[1, 2, 40, 2240, 246400, 44844800, 12197785600, 4635158528000, 2345390215168000, 1524503639859200000, 1237896955565670400000, 1227993779921145036800000, 1461312598106162593792000000, 2054605512937264606871552000000]

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

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