n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 20 |
4 | 316 |
5 | 6312 |
6 | 146256 |
7 | 3765792 |
8 | 105104272 |
9 | 3130299744 |
10 | 98434722240 |
11 | 3243746014592 |
12 | 111400312737152 |
13 | 3970597596057856 |
14 | 146403897677390336 |
15 | 5570169496704513024 |
16 | 218228733514994839808 |
17 | 8789314898568643716608 |
[1,2,20,316,6312,146256,3765792,105104272, 3130299744,98434722240,3243746014592, 111400312737152,3970597596057856, 146403897677390336,5570169496704513024, 218228733514994839808,8789314898568643716608] |