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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 13 |
| 4 | 19 |
| 5 | 373 |
| 6 | 135859 |
| 7 | 135859 |
| 8 | 18235423 |
| 9 | 26588257 |
| 10 | 93112729 |
| 11 | 376038903103 |
| 12 | 7087694466289 |
| 13 | 120223669028389 |
[2,3,13,19,373,135859,135859,18235423,26588257, 93112729,376038903103,7087694466289, 120223669028389] |