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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 170 |
| 4 | 9504 |
| 5 | 1415898 |
| 6 | 559634028 |
| 7 | 585611214958 |
| 8 | 1623186113355468 |
| 9 | 11918444465082418938 |
| 10 | 231853794250990035322072 |
[1,8,170,9504,1415898,559634028,585611214958, 1623186113355468,11918444465082418938, 231853794250990035322072] |