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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 867 |
| 3 | 35845 |
| 4 | 703848 |
| 5 | 19187708 |
| 6 | 342820859 |
| 7 | 6895486778 |
| 8 | 107560020020 |
| 9 | 1764791619523 |
[81,867,35845,703848,19187708,342820859, 6895486778,107560020020,1764791619523] |