n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 2 |
4 | 36 |
5 | 840 |
6 | 29680 |
7 | 1429920 |
8 | 90318144 |
9 | 7237943552 |
10 | 717442928640 |
11 | 86171602072320 |
12 | 12331048749268480 |
13 | 2072725870491859968 |
14 | 404352831489304049664 |
15 | 90605920564322676531200 |
16 | 23110943021722435879157760 |
17 | 6657484407493222296916131840 |
[0,0,2,36,840,29680,1429920,90318144,7237943552, 717442928640,86171602072320,12331048749268480, 2072725870491859968,404352831489304049664, 90605920564322676531200, 23110943021722435879157760, 6657484407493222296916131840] |