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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 53 |
| 4 | 7 |
| 5 | 11 |
| 6 | 13 |
| 7 | 171311753 |
| 8 | 19 |
| 9 | 23 |
| 10 | 292319 |
| 11 | 31 |
| 12 | 3731292319 |
| 13 | 41 |
| 14 | 4341373129 |
| 15 | 47 |
| 16 | 5347 |
| 17 | 5953474341373129 |
| 18 | 615953474341 |
| 19 | 6761 |
| 20 | 71 |
| 21 | 7371676159 |
| 22 | 797371676159 |
| 23 | 837973716761 |
| 24 | 8983797371676159534743413731292319171311753 |
| 25 | 97 |
| 26 | 101 |
[2,3,53,7,11,13,171311753,19,23,292319,31, 3731292319,41,4341373129,47,5347,5953474341373129, 615953474341,6761,71,7371676159,797371676159, 837973716761, 8983797371676159534743413731292319171311753,97, 101] |