n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 28 |
5 | -120 |
6 | 1122 |
7 | -8127 |
8 | 88096 |
9 | -885216 |
10 | 11291624 |
11 | -143432883 |
12 | 2131731944 |
13 | -32515910232 |
14 | 555050034224 |
15 | -9845456006487 |
16 | 190381188822016 |
17 | -3842126730651264 |
18 | 83143449079579584 |
19 | -1878918839085535971 |
20 | 45029979676319086976 |
[1,0,2,-3,28,-120,1122,-8127,88096,-885216, 11291624,-143432883,2131731944,-32515910232, 555050034224,-9845456006487,190381188822016, -3842126730651264,83143449079579584, -1878918839085535971,45029979676319086976] |