n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 6 |
4 | 12 |
5 | 100 |
6 | 780 |
7 | -1092 |
8 | 43344 |
9 | 48816 |
10 | 1264320 |
11 | 24662880 |
12 | -162851040 |
13 | 4327633440 |
14 | -17686783296 |
15 | 275230488960 |
16 | 3743721112320 |
17 | -70886371933440 |
18 | 2127136959383040 |
19 | -25991855154846720 |
20 | 402985066993459200 |
[1,1,0,6,12,100,780,-1092,43344,48816,1264320, 24662880,-162851040,4327633440,-17686783296, 275230488960,3743721112320,-70886371933440, 2127136959383040,-25991855154846720, 402985066993459200] |