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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | -5028 |
| 3 | 5704188 |
| 4 | -7284893010 |
| 5 | 9926715853068 |
| 6 | -14092613175928308 |
| 7 | 20580782244716567592 |
| 8 | -30684764269418402550900 |
| 9 | 46478269075227117026711730 |
| 10 | -71284154421570122590465786956 |
| 11 | 110437754516732491586466670733772 |
| 12 | -172528135408494997625486967978486588 |
| 13 | 271418933884659782820559630827037837908 |
[1,6,-5028,5704188,-7284893010,9926715853068, -14092613175928308,20580782244716567592, -30684764269418402550900, 46478269075227117026711730, -71284154421570122590465786956, 110437754516732491586466670733772, -172528135408494997625486967978486588, 271418933884659782820559630827037837908] |