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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 5 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | -315 |
| 10 | 6300 |
| 11 | 0 |
| 12 | 0 |
| 13 | 150150 |
| 14 | -6306300 |
| 15 | 94594500 |
| 16 | 0 |
| 17 | -268017750 |
| 18 | 17689171500 |
| 19 | -549972423000 |
| 20 | 7332965640000 |
| 21 | 1283268987000 |
| 22 | -117632990475000 |
| 23 | 5681673439942500 |
| 24 | -155840185781280000 |
| 25 | 1934474528361375000 |
| 26 | 1606200062942475000 |
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