n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 48 |
5 | 1440 |
6 | 414720 |
7 | 2090188800 |
8 | 1155790798848000 |
9 | 226483217146419609600000 |
10 | 302971317675145105975227187200000000 |
11 | 37917003542135076706761224377027811868672000000000000 |
12 | 45800346382799680410294841758069930049013501333211737122406400000000000000000 |
[1,1,2,6,48,1440,414720,2090188800, 1155790798848000,226483217146419609600000, 302971317675145105975227187200000000, 37917003542135076706761224377027811868672000000000\ 000, 45800346382799680410294841758069930049013501333211\ 737122406400000000000000000] |