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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 47 |
| 4 | 1 |
| 5 | -13409 |
| 6 | 77441 |
| 7 | 19836879 |
| 8 | -535288319 |
| 9 | -139742075329 |
| 10 | -2263631905535 |
| 11 | 1157041164813423 |
| 12 | 85544399896958465 |
| 13 | -10251042205544240161 |
| 14 | -896378013566768664703 |
| 15 | 524122354739233459190287 |
[1,-1,1,47,1,-13409,77441,19836879,-535288319, -139742075329,-2263631905535,1157041164813423, 85544399896958465,-10251042205544240161, -896378013566768664703,524122354739233459190287] |