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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -4 |
| 3 | -27 |
| 4 | -64 |
| 5 | 4375 |
| 6 | 199584 |
| 7 | 6739607 |
| 8 | 169934848 |
| 9 | -1012395105 |
| 10 | -709624000000 |
| 11 | -86599643309201 |
| 12 | -8221227668471808 |
| 13 | -638169258399740977 |
| 14 | -27617164284655812608 |
| 15 | 3853095093357099609375 |
| 16 | 1568756883209662050074624 |
| 17 | 360407172063462944082773311 |
[1,0,-4,-27,-64,4375,199584,6739607,169934848, -1012395105,-709624000000,-86599643309201, -8221227668471808,-638169258399740977, -27617164284655812608,3853095093357099609375, 1568756883209662050074624, 360407172063462944082773311] |