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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 13 |
| 6 | 29 |
| 7 | 31 |
| 8 | 41 |
| 9 | 47 |
| 10 | 53 |
| 11 | 61 |
| 12 | 79 |
| 13 | 83 |
| 14 | 97 |
| 15 | 163 |
| 16 | 257 |
| 17 | 461 |
| 18 | 479 |
| 19 | 503 |
| 20 | 613 |
| 21 | 631 |
| 22 | 641 |
| 23 | 683 |
| 24 | 853 |
| 25 | 863 |
| 26 | 947 |
| 27 | 2749 |
| 28 | 4297 |
| 29 | 4729 |
[2,3,5,7,13,29,31,41,47,53,61,79,83,97,163,257, 461,479,503,613,631,641,683,853,863,947,2749,4297, 4729] |