n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 24 |
8 | 72 |
9 | 0 |
10 | 0 |
11 | 1704 |
12 | 5184 |
13 | 0 |
14 | 0 |
15 | 193344 |
16 | 600504 |
17 | 0 |
18 | 0 |
19 | 34321512 |
20 | 141520752 |
21 | 0 |
22 | 0 |
23 | 9205815672 |
24 | 37962945288 |
25 | 0 |
26 | 0 |
[0,0,0,0,0,0,24,72,0,0,1704,5184,0,0,193344, 600504,0,0,34321512,141520752,0,0,9205815672, 37962945288,0,0] |