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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -5 |
| 3 | 121 |
| 4 | -6677 |
| 5 | 651985 |
| 6 | -98741477 |
| 7 | 21378584137 |
| 8 | -6259615830197 |
| 9 | 2380487154907681 |
| 10 | -1140222272527932869 |
| 11 | 671453734616884934041 |
| 12 | -476714184862146843059285 |
| 13 | 401522701697360654591942641 |
[1,-5,121,-6677,651985,-98741477,21378584137, -6259615830197,2380487154907681, -1140222272527932869,671453734616884934041, -476714184862146843059285, 401522701697360654591942641] |