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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | -299 |
| 4 | 40751 |
| 5 | 5067841 |
| 6 | -7323445921 |
| 7 | -999631061099 |
| 8 | 8071239253153439 |
| 9 | 3226932423143680609 |
| 10 | -35637793578511857426241 |
| 11 | -56681720635442893862661899 |
| 12 | 428341845237867375193339807439 |
| 13 | 2249822227541602344980346463546081 |
[1,-1,-299,40751,5067841,-7323445921, -999631061099,8071239253153439, 3226932423143680609,-35637793578511857426241, -56681720635442893862661899, 428341845237867375193339807439, 2249822227541602344980346463546081] |