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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 17 |
| 4 | 1192 |
| 5 | 1595015 |
| 6 | 3181399537600 |
| 7 | 19206951151850850668969384 |
| 8 | 609405107959734253845629228248496877079162949813293 |
[2,3,17,1192,1595015,3181399537600, 19206951151850850668969384, 60940510795973425384562922824849687707916294981329\ 3] |