n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 130 |
4 | 1990 |
5 | 39500 |
6 | 962540 |
7 | 27807120 |
8 | 928991280 |
9 | 35233882320 |
10 | 1495508048160 |
11 | 70233555485520 |
12 | 3615667144284720 |
13 | 202470393271792800 |
14 | 12252576455326384800 |
15 | 796817209624497196800 |
16 | 55418456683474326892800 |
17 | 4104671046431448576787200 |
[1,2,12,130,1990,39500,962540,27807120,928991280, 35233882320,1495508048160,70233555485520, 3615667144284720,202470393271792800, 12252576455326384800,796817209624497196800, 55418456683474326892800,4104671046431448576787200] |