n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -1 |
3 | 3 |
4 | -18 |
5 | 60 |
6 | -180 |
7 | -1050 |
8 | 24192 |
9 | -308952 |
10 | 3131760 |
11 | -23742840 |
12 | 62587272 |
13 | 2606501040 |
14 | -75839636600 |
15 | 1415140435800 |
16 | -20144425867712 |
17 | 187207018203392 |
18 | 730860552463104 |
19 | -93674690778135744 |
[1,0,-1,3,-18,60,-180,-1050,24192,-308952,3131760, -23742840,62587272,2606501040,-75839636600, 1415140435800,-20144425867712,187207018203392, 730860552463104,-93674690778135744] |