n | a(n) |
---|---|
1 | -1 |
2 | 1 |
3 | -4 |
4 | 17 |
5 | -56 |
6 | 172 |
7 | -547 |
8 | 1809 |
9 | -6061 |
10 | 20316 |
11 | -68135 |
12 | 229244 |
13 | -774372 |
14 | 2624119 |
15 | -8912759 |
16 | 30328593 |
17 | -103382254 |
18 | 352975681 |
19 | -1206921212 |
20 | 4132159452 |
21 | -14163858895 |
22 | 48601267199 |
23 | -166930975524 |
24 | 573872089212 |
25 | -1974472043081 |
26 | 6798561779868 |
27 | -23425506369715 |
[-1,1,-4,17,-56,172,-547,1809,-6061,20316,-68135, 229244,-774372,2624119,-8912759,30328593, -103382254,352975681,-1206921212,4132159452, -14163858895,48601267199,-166930975524, 573872089212,-1974472043081,6798561779868, -23425506369715] |