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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -7 |
| 2 | -120 |
| 3 | 5383 |
| 4 | 77880 |
| 5 | -2948407 |
| 6 | -125323560 |
| 7 | 26616731351 |
| 8 | 376190322360 |
| 9 | -25686697799497 |
| 10 | -1814718336714600 |
| 11 | 302901133224550693 |
| 12 | 12839243232438424440 |
| 13 | -1266347767699067305987 |
| 14 | -125246840316843588099240 |
| 15 | 114029802259144841041647367 |
| 16 | 1611142488785956248768600120 |
[1,-7,-120,5383,77880,-2948407,-125323560, 26616731351,376190322360,-25686697799497, -1814718336714600,302901133224550693, 12839243232438424440,-1266347767699067305987, -125246840316843588099240, 114029802259144841041647367, 1611142488785956248768600120] |