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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | -17 |
| 4 | -299 |
| 5 | 1921 |
| 6 | 451621 |
| 7 | 23016631 |
| 8 | -138672407 |
| 9 | -208026131039 |
| 10 | -31455532865879 |
| 11 | -2214855733827329 |
| 12 | 358045039222582141 |
| 13 | 197933737480453452193 |
| 14 | 51028310360637930765901 |
| 15 | 6769736050165112232649351 |
| 16 | -1644881699523140953828119599 |
[1,1,-17,-299,1921,451621,23016631,-138672407, -208026131039,-31455532865879,-2214855733827329, 358045039222582141,197933737480453452193, 51028310360637930765901,6769736050165112232649351, -1644881699523140953828119599] |