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| n | a(n) |
|---|---|
| 1 | 729 |
| 2 | 1458 |
| 3 | 23346 |
| 4 | 235824 |
| 5 | 2986152 |
| 6 | 33994188 |
| 7 | 409408542 |
| 8 | 4791504648 |
| 9 | 56948232390 |
| 10 | 671408641884 |
| 11 | 7950212281224 |
| 12 | 93923210426688 |
| 13 | 1110971521842576 |
| 14 | 13132515793768920 |
| 15 | 155290791915166218 |
| 16 | 1835954950424998884 |
[729,1458,23346,235824,2986152,33994188,409408542, 4791504648,56948232390,671408641884,7950212281224, 93923210426688,1110971521842576,13132515793768920, 155290791915166218,1835954950424998884] |