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| n | a(n) |
|---|---|
| 1 | 27 |
| 2 | 351 |
| 3 | 4995 |
| 4 | 72279 |
| 5 | 1048923 |
| 6 | 15229647 |
| 7 | 221142771 |
| 8 | 3211159815 |
| 9 | 46628577099 |
| 10 | 677084057343 |
| 11 | 9831800199267 |
| 12 | 142765577323191 |
| 13 | 2073070007320635 |
| 14 | 30102629340815919 |
| 15 | 437114178530327763 |
| 16 | 6347246378746198887 |
[27,351,4995,72279,1048923,15229647,221142771, 3211159815,46628577099,677084057343,9831800199267, 142765577323191,2073070007320635, 30102629340815919,437114178530327763, 6347246378746198887] |