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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -4 |
| 2 | 1172 |
| 3 | -2394604 |
| 4 | 17925470132 |
| 5 | -356711164156204 |
| 6 | 15557257046545589492 |
| 7 | -1306859934761006954164204 |
| 8 | 192757826813283097789632563252 |
| 9 | -46564510721452609888686654192978604 |
| 10 | 17449940281041871638688960825766828695412 |
| 11 | -9712709908164237387647891995373875626734039404 |
[1,-4,1172,-2394604,17925470132,-356711164156204, 15557257046545589492,-1306859934761006954164204, 192757826813283097789632563252, -46564510721452609888686654192978604, 17449940281041871638688960825766828695412, -9712709908164237387647891995373875626734039404] |