n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 10 |
6 | 40 |
7 | 40 |
8 | 105 |
9 | 5627 |
10 | 14501 |
11 | 330861 |
12 | 658110 |
13 | 897229 |
14 | 26673531 |
15 | 180566007 |
16 | 180566007 |
17 | 19299107624 |
[0,1,2,5,10,40,40,105,5627,14501,330861,658110, 897229,26673531,180566007,180566007,19299107624] |