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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 2 |
| 6 | 3 |
| 7 | 5 |
| 8 | 7 |
| 9 | 5 |
| 10 | 7 |
| 11 | 11 |
| 12 | 13 |
| 13 | 11 |
| 14 | 13 |
| 15 | 17 |
| 16 | 17 |
| 17 | 19 |
| 18 | 23 |
| 19 | 5 |
[2,3,5,7,2,3,5,7,5,7,11,13,11,13,17,17,19,23,5] |