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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -5 |
| 2 | 89 |
| 3 | -4717 |
| 4 | 449073 |
| 5 | -69090581 |
| 6 | 15583801609 |
| 7 | -4846181282685 |
| 8 | 1987373846425697 |
| 9 | -1039121484066627877 |
| 10 | 674707915373741222841 |
| 11 | -532627526452975709882765 |
| 12 | 502375568363623615781076625 |
| 13 | -557965947638266639781208500277 |
| 14 | 720767702359064719935712626879593 |
| 15 | -1071470941893105999704454019614019741 |
[1,-5,89,-4717,449073,-69090581,15583801609, -4846181282685,1987373846425697, -1039121484066627877,674707915373741222841, -532627526452975709882765, 502375568363623615781076625, -557965947638266639781208500277, 720767702359064719935712626879593, -1071470941893105999704454019614019741] |