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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 13 |
| 6 | 19 |
| 7 | 31 |
| 8 | 41 |
| 9 | 43 |
| 10 | 61 |
| 11 | 109 |
| 12 | 139 |
| 13 | 251 |
| 14 | 643 |
| 15 | 4933 |
| 16 | 9433 |
| 17 | 36493 |
| 18 | 191416111 |
| 19 | 1304119699 |
[2,3,5,11,13,19,31,41,43,61,109,139,251,643,4933, 9433,36493,191416111,1304119699] |