n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 30 |
5 | 504 |
6 | 1978 |
7 | 714840 |
8 | 500421564 |
9 | 4855562127780 |
10 | 1169461626163992 |
11 | 112848995546998874467920 |
12 | 7363180440 |
[1,1,2,5,30,504,1978,714840,500421564, 4855562127780,1169461626163992, 112848995546998874467920,7363180440] |