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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 900 |
| 3 | 27000 |
| 4 | 810000 |
| 5 | 24300000 |
| 6 | 729000000 |
| 7 | 21870000000 |
| 8 | 656100000000 |
| 9 | 19683000000000 |
| 10 | 590490000000000 |
| 11 | 17714700000000000 |
| 12 | 531441000000000000 |
| 13 | 15943230000000000000 |
| 14 | 478296900000000000000 |
| 15 | 14348907000000000000000 |
[1,30,900,27000,810000,24300000,729000000, 21870000000,656100000000,19683000000000, 590490000000000,17714700000000000, 531441000000000000,15943230000000000000, 478296900000000000000,14348907000000000000000] |