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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -3 |
| 2 | -55 |
| 3 | 549 |
| 4 | 17105 |
| 5 | -290163 |
| 6 | -13303015 |
| 7 | 316777269 |
| 8 | 19321588385 |
| 9 | -591738931683 |
| 10 | -45104637594775 |
| 11 | 1688397003889989 |
| 12 | 154431129354692465 |
| 13 | -6831886973961176403 |
| 14 | -729031676636458475335 |
| 15 | 37213483871550478106709 |
| 16 | 4538348625017228461697345 |
[1,-3,-55,549,17105,-290163,-13303015,316777269, 19321588385,-591738931683,-45104637594775, 1688397003889989,154431129354692465, -6831886973961176403,-729031676636458475335, 37213483871550478106709,4538348625017228461697345] |