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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | -6 |
| 9 | 56 |
| 10 | -528 |
| 11 | 6193 |
| 12 | -86579 |
| 13 | 1425518 |
| 14 | -27298230 |
| 15 | 601580875 |
| 16 | -15116315766 |
| 17 | 429614643062 |
| 18 | -13711655205087 |
| 19 | 488332318973594 |
| 20 | -19296579341940067 |
| 21 | 841693047573682616 |
| 22 | -40338071854059455412 |
| 23 | 2115074863808199160561 |
| 24 | -120866265222965259346026 |
[1,1,1,1,1,1,2,-6,56,-528,6193,-86579,1425518, -27298230,601580875,-15116315766,429614643062, -13711655205087,488332318973594, -19296579341940067,841693047573682616, -40338071854059455412,2115074863808199160561, -120866265222965259346026] |