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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -15 |
| 2 | 271 |
| 3 | -7655 |
| 4 | 284491 |
| 5 | -9609795 |
| 6 | -382526689 |
| 7 | 229639178065 |
| 8 | -65098408980269 |
| 9 | 17837435546853925 |
| 10 | -5217817960366272249 |
| 11 | 1673172596073749841785 |
| 12 | -591805818675678286322629 |
[1,-15,271,-7655,284491,-9609795,-382526689, 229639178065,-65098408980269,17837435546853925, -5217817960366272249,1673172596073749841785, -591805818675678286322629] |