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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 81 |
| 3 | 81 |
| 4 | 729 |
| 5 | 1517 |
| 6 | 729 |
| 7 | 6561 |
| 8 | 28057 |
| 9 | 28057 |
| 10 | 6561 |
| 11 | 59049 |
| 12 | 519445 |
| 13 | 1116249 |
| 14 | 519445 |
| 15 | 59049 |
| 16 | 531441 |
| 17 | 9616161 |
| 18 | 44577561 |
| 19 | 44577561 |
| 20 | 9616161 |
| 21 | 531441 |
| 22 | 4782969 |
| 23 | 178019197 |
| 24 | 1780968921 |
| 25 | 3906948333 |
| 26 | 1780968921 |
| 27 | 178019197 |
| 28 | 4782969 |
| 29 | 43046721 |
| 30 | 3295578857 |
[9,81,81,729,1517,729,6561,28057,28057,6561,59049, 519445,1116249,519445,59049,531441,9616161, 44577561,44577561,9616161,531441,4782969, 178019197,1780968921,3906948333,1780968921, 178019197,4782969,43046721,3295578857] |