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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -3 |
| 3 | -3 |
| 4 | 217 |
| 5 | -2951 |
| 6 | 5973 |
| 7 | 1237173 |
| 8 | -52635599 |
| 9 | 1126610929 |
| 10 | 20058390573 |
| 11 | -3920482183827 |
| 12 | 256734635981833 |
| 13 | -8529964147714967 |
| 14 | -383670903748980603 |
| 15 | 99786978811973617701 |
| 16 | -10380441423510120242591 |
| 17 | 594094494902602207843297 |
[1,1,-3,-3,217,-2951,5973,1237173,-52635599, 1126610929,20058390573,-3920482183827, 256734635981833,-8529964147714967, -383670903748980603,99786978811973617701, -10380441423510120242591,594094494902602207843297] |