n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 60 |
4 | 888 |
5 | 18120 |
6 | 485280 |
7 | 16445520 |
8 | 685722240 |
9 | 34411184640 |
10 | 2041544736000 |
11 | 141106965753600 |
12 | 11223409849344000 |
13 | 1016591564596608000 |
14 | 103921686070339737600 |
15 | 11896153817325313536000 |
[1,6,60,888,18120,485280,16445520,685722240, 34411184640,2041544736000,141106965753600, 11223409849344000,1016591564596608000, 103921686070339737600,11896153817325313536000] |