n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 12 |
4 | 96 |
5 | 1120 |
6 | 17280 |
7 | 330624 |
8 | 7540736 |
9 | 199544832 |
10 | 6006988800 |
11 | 202646118400 |
12 | 7570772656128 |
13 | 310240496517120 |
14 | 13834761553313792 |
15 | 666909048381112320 |
16 | 34555424387503226880 |
17 | 1915099718255940468736 |
[0,4,12,96,1120,17280,330624,7540736,199544832, 6006988800,202646118400,7570772656128, 310240496517120,13834761553313792, 666909048381112320,34555424387503226880, 1915099718255940468736] |