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| n | a(n) |
|---|---|
| 1 | 609 |
| 2 | 18873 |
| 3 | 308593 |
| 4 | 6275745 |
| 5 | 116461359 |
| 6 | 2259545215 |
| 7 | 43035959317 |
| 8 | 826432933951 |
| 9 | 15812881574729 |
| 10 | 303053537534437 |
| 11 | 5803938965263449 |
| 12 | 111189559377323685 |
| 13 | 2129829613338983271 |
| 14 | 40799287763726714069 |
| 15 | 781535113579919280543 |
[609,18873,308593,6275745,116461359,2259545215, 43035959317,826432933951,15812881574729, 303053537534437,5803938965263449, 111189559377323685,2129829613338983271, 40799287763726714069,781535113579919280543] |