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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 88 |
| 5 | 212 |
| 6 | 893 |
| 7 | 69242288 |
| 8 | 8819171038 |
| 9 | 865996535661545126193725357 |
[2,3,7,88,212,893,69242288,8819171038, 865996535661545126193725357] |