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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -10 |
| 3 | 260 |
| 4 | -9002 |
| 5 | 391860 |
| 6 | -20256038 |
| 7 | 1211950740 |
| 8 | -82281893850 |
| 9 | 6247844526420 |
| 10 | -524546069736150 |
| 11 | 48243794823724500 |
| 12 | -4823577417987578250 |
| 13 | 520903033165862392500 |
| 14 | -60422912433611865159750 |
| 15 | 7492466897219978346172500 |
[1,-10,260,-9002,391860,-20256038,1211950740, -82281893850,6247844526420,-524546069736150, 48243794823724500,-4823577417987578250, 520903033165862392500,-60422912433611865159750, 7492466897219978346172500] |