n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 30 |
4 | 223 |
5 | 1722 |
6 | 14430 |
7 | 125322 |
8 | 1123612 |
9 | 10303798 |
10 | 96228900 |
11 | 911986784 |
12 | 8749074498 |
13 | 84797323618 |
14 | 829080237870 |
[1,6,30,223,1722,14430,125322,1123612,10303798, 96228900,911986784,8749074498,84797323618, 829080237870] |