n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 80 |
4 | 1120 |
5 | 20544 |
6 | 463744 |
7 | 12422656 |
8 | 384947200 |
9 | 13541822464 |
10 | 533049493504 |
11 | 23210958688256 |
12 | 1107652218822656 |
13 | 57482801016422400 |
14 | 3223015475535380480 |
15 | 194157345516262588416 |
16 | 12505948470244176953344 |
17 | 857670052436844788318208 |
18 | 62395270194815987194789888 |
[1,2,8,80,1120,20544,463744,12422656,384947200, 13541822464,533049493504,23210958688256, 1107652218822656,57482801016422400, 3223015475535380480,194157345516262588416, 12505948470244176953344,857670052436844788318208, 62395270194815987194789888] |