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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 261 |
| 3 | 18721 |
| 4 | 571226 |
| 5 | 15000701 |
| 6 | 451200772 |
| 7 | 14940780666 |
| 8 | 476186342599 |
| 9 | 14723977144889 |
| 10 | 457772945684867 |
| 11 | 14379443320523238 |
| 12 | 451520043526895518 |
| 13 | 14134809455898239484 |
| 14 | 442341751627382776887 |
| 15 | 13854804160752439932243 |
[64,261,18721,571226,15000701,451200772, 14940780666,476186342599,14723977144889, 457772945684867,14379443320523238, 451520043526895518,14134809455898239484, 442341751627382776887,13854804160752439932243] |