n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | 80 |
6 | 1860 |
7 | 64680 |
8 | 3666600 |
9 | 354093264 |
10 | 59372032440 |
11 | 17572209206640 |
12 | 9347625940951980 |
13 | 9099961952914672840 |
14 | 16480899322963497105684 |
15 | 56311549004017312945310280 |
16 | 367105988116570172056739960080 |
[0,0,0,4,80,1860,64680,3666600,354093264, 59372032440,17572209206640,9347625940951980, 9099961952914672840,16480899322963497105684, 56311549004017312945310280, 367105988116570172056739960080] |