n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 6 |
6 | 42 |
7 | 1806 |
8 | 1632624 |
9 | 444245153520 |
10 | 4698898962968253924720 |
11 | 12225720633546031105793020748137513851120 |
12 | 91550929674875028299231929179221527919681972461210779957660001348767546720 |
[1,1,1,1,2,6,42,1806,1632624,444245153520, 4698898962968253924720, 12225720633546031105793020748137513851120, 91550929674875028299231929179221527919681972461210\ 779957660001348767546720] |