n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 6 |
4 | 36 |
5 | 150 |
6 | 3060 |
7 | 62286 |
8 | 867636 |
9 | 15591750 |
10 | 419764500 |
11 | 10834588446 |
12 | 277719263316 |
13 | 8580282719190 |
14 | 297021183388020 |
15 | 10459810717672686 |
16 | 393932179466738676 |
17 | 16351788886638987750 |
18 | 717798906181149294420 |
19 | 32905220431196072057406 |
[1,0,0,6,36,150,3060,62286,867636,15591750, 419764500,10834588446,277719263316,8580282719190, 297021183388020,10459810717672686, 393932179466738676,16351788886638987750, 717798906181149294420,32905220431196072057406] |