n | a(n) |
---|---|
3 | 6 |
4 | 72 |
5 | 690 |
6 | 6192 |
7 | 53946 |
8 | 466800 |
9 | 4053816 |
10 | 35450940 |
11 | 312411672 |
12 | 2773863060 |
13 | 24802293720 |
14 | 223203954264 |
15 | 2020552369164 |
[6,72,690,6192,53946,466800,4053816,35450940, 312411672,2773863060,24802293720,223203954264, 2020552369164] |