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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 81 |
| 3 | 723 |
| 4 | 6399 |
| 5 | 57044 |
| 6 | 506056 |
| 7 | 4480295 |
| 8 | 39730275 |
| 9 | 351839972 |
| 10 | 3114257783 |
| 11 | 27591129854 |
| 12 | 244104129909 |
[9,81,723,6399,57044,506056,4480295,39730275, 351839972,3114257783,27591129854,244104129909] |