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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -7 |
| 3 | 121 |
| 4 | -3823 |
| 5 | 186961 |
| 6 | -12464695 |
| 7 | 967217161 |
| 8 | -51115216735 |
| 9 | -15922673810399 |
| 10 | 12685061907297305 |
| 11 | -7463929930799687399 |
| 12 | 4531120544938557395633 |
| 13 | -3032728078954072676445839 |
[1,1,-7,121,-3823,186961,-12464695,967217161, -51115216735,-15922673810399,12685061907297305, -7463929930799687399,4531120544938557395633, -3032728078954072676445839] |