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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 29 |
| 4 | 1873 |
| 5 | 7672913 |
| 6 | 8045632442437 |
| 7 | 2490002635466567109268165355290155548689 |
[3,7,29,1873,7672913,8045632442437, 2490002635466567109268165355290155548689] |