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| n | a(n) |
|---|---|
| 1 | 729 |
| 2 | 47601 |
| 3 | 3450897 |
| 4 | 252034065 |
| 5 | 18416334609 |
| 6 | 1345741836561 |
| 7 | 98337982792977 |
| 8 | 7185895596690705 |
| 9 | 525098182736403729 |
| 10 | 38370735838630837521 |
| 11 | 2803882049628099984657 |
| 12 | 204889334969084697296145 |
| 13 | 14971970589722490394623249 |
[729,47601,3450897,252034065,18416334609, 1345741836561,98337982792977,7185895596690705, 525098182736403729,38370735838630837521, 2803882049628099984657,204889334969084697296145, 14971970589722490394623249] |