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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 11 |
| 3 | 15 |
| 4 | 17 |
| 5 | 27 |
| 6 | 51 |
| 7 | 57 |
| 8 | 71 |
| 9 | 117 |
| 10 | 2073 |
| 11 | 6251 |
| 12 | 13671 |
| 13 | 14217 |
| 14 | 14627 |
| 15 | 396128 |
[5,11,15,17,27,51,57,71,117,2073,6251,13671,14217, 14627,396128] |