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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 217 |
| 3 | -214279 |
| 4 | 824071 |
| 5 | -337533513773 |
| 6 | 8320611986431 |
| 7 | -2303253020856673 |
| 8 | 7111553692366818727 |
| 9 | -4825610634542923917792887 |
| 10 | 6031202702741413913839327 |
| 11 | -1707209475196496091030335944673 |
[1,-1,217,-214279,824071,-337533513773, 8320611986431,-2303253020856673, 7111553692366818727,-4825610634542923917792887, 6031202702741413913839327, -1707209475196496091030335944673] |