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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 513 |
| 3 | 18915 |
| 4 | 730503 |
| 5 | 28368687 |
| 6 | 1100265795 |
| 7 | 42681522741 |
| 8 | 1655698076319 |
| 9 | 64227455495727 |
| 10 | 2491499259313149 |
| 11 | 96649752790452639 |
| 12 | 3749218360204902945 |
| 13 | 145438947787185663525 |
| 14 | 5641839307719342400131 |
| 15 | 218857130513207098732227 |
[9,513,18915,730503,28368687,1100265795, 42681522741,1655698076319,64227455495727, 2491499259313149,96649752790452639, 3749218360204902945,145438947787185663525, 5641839307719342400131,218857130513207098732227] |