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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | -12 |
| 4 | -193 |
| 5 | -2365 |
| 6 | -18552 |
| 7 | 500689 |
| 8 | 48649969 |
| 9 | 2981261772 |
| 10 | 169237306055 |
| 11 | 9187565146331 |
| 12 | 427287357700176 |
| 13 | 6011297159973313 |
| 14 | -2887128048794477663 |
| 15 | -711942625068679870620 |
| 16 | -132369975517302093882097 |
| 17 | -22968753773651295426439021 |
[0,1,1,-12,-193,-2365,-18552,500689,48649969, 2981261772,169237306055,9187565146331, 427287357700176,6011297159973313, -2887128048794477663,-711942625068679870620, -132369975517302093882097, -22968753773651295426439021] |