n | a(n) |
---|---|
2 | 2 |
3 | 6 |
4 | 36 |
5 | 150 |
6 | 938 |
7 | 5968 |
8 | 36762 |
9 | 235074 |
10 | 1553854 |
11 | 10377280 |
12 | 70137652 |
13 | 479982854 |
14 | 3319376006 |
15 | 23157283294 |
16 | 162789085594 |
[2,6,36,150,938,5968,36762,235074,1553854, 10377280,70137652,479982854,3319376006, 23157283294,162789085594] |