| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 81 |
| 3 | 729 |
| 4 | 6561 |
| 5 | 59049 |
| 6 | 531441 |
| 7 | 4782969 |
| 8 | 43046721 |
| 9 | 387420489 |
| 10 | 3486784401 |
| 11 | 94143178827 |
| 12 | 847288609443 |
| 13 | 7625597484987 |
| 14 | 68630377364883 |
| 15 | 617673396283947 |
| 16 | 5559060566555523 |
| 17 | 50031545098999707 |
| 18 | 450283905890997363 |
[1,9,81,729,6561,59049,531441,4782969,43046721, 387420489,3486784401,94143178827,847288609443, 7625597484987,68630377364883,617673396283947, 5559060566555523,50031545098999707, 450283905890997363] |