n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 5 |
4 | 44 |
5 | 476 |
6 | 6336 |
7 | 99504 |
8 | 1803024 |
9 | 37019664 |
10 | 849418560 |
11 | 21539756160 |
12 | 598194037440 |
13 | 18056575823040 |
14 | 588622339549440 |
15 | 20609136708249600 |
16 | 771323264354361600 |
17 | 30729606721005830400 |
18 | 1298448658633614566400 |
[1,0,1,5,44,476,6336,99504,1803024,37019664, 849418560,21539756160,598194037440,18056575823040, 588622339549440,20609136708249600, 771323264354361600,30729606721005830400, 1298448658633614566400] |