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| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 1 |
| 10 | 66197 |
| 11 | 250952 |
| 12 | 18952950999 |
| 13 | 253708881459 |
| 14 | 32572923537006164 |
| 15 | 1470573601262677388 |
| 16 | 380591600530893567736185 |
| 17 | 56147188534659327496920501 |
| 18 | 32148338107501290909364945321743 |
[1,1,66197,250952,18952950999,253708881459, 32572923537006164,1470573601262677388, 380591600530893567736185, 56147188534659327496920501, 32148338107501290909364945321743] |