n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 608 |
7 | 3684 |
8 | 23136 |
9 | 174536 |
10 | 1409200 |
11 | 12672984 |
12 | 123070048 |
13 | 1287015142 |
14 | 14387894342 |
15 | 172259484314 |
16 | 2186934015808 |
[1,2,6,24,120,608,3684,23136,174536,1409200, 12672984,123070048,1287015142,14387894342, 172259484314,2186934015808] |