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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -3 |
| 2 | 49 |
| 3 | -1859 |
| 4 | 127297 |
| 5 | -13662371 |
| 6 | 2114110257 |
| 7 | -445110767139 |
| 8 | 122308548673025 |
| 9 | -42491524107649475 |
| 10 | 18204849127687565745 |
| 11 | -9427087716053634833795 |
| 12 | 5803356448065850202170945 |
| 13 | -4188507975000626549209008995 |
| 14 | 3502566426777342320289454951345 |
[1,-3,49,-1859,127297,-13662371,2114110257, -445110767139,122308548673025,-42491524107649475, 18204849127687565745,-9427087716053634833795, 5803356448065850202170945, -4188507975000626549209008995, 3502566426777342320289454951345] |