n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 54 |
4 | 1004 |
5 | 28500 |
6 | 1145220 |
7 | 61822320 |
8 | 4314308544 |
9 | 377894704320 |
10 | 40585486536000 |
11 | 5244015013776000 |
12 | 802446580009071360 |
13 | 143506045946368385280 |
14 | 29655761650514250451200 |
15 | 7012678074108426720000000 |
[1,1,5,54,1004,28500,1145220,61822320,4314308544, 377894704320,40585486536000,5244015013776000, 802446580009071360,143506045946368385280, 29655761650514250451200,7012678074108426720000000] |