n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 624 |
7 | 4176 |
8 | 32620 |
9 | 284384 |
10 | 2803702 |
11 | 29664334 |
12 | 339061272 |
13 | 4391825384 |
14 | 58843870478 |
15 | 866121264934 |
[1,2,6,24,120,624,4176,32620,284384,2803702, 29664334,339061272,4391825384,58843870478, 866121264934] |