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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 17 |
| 4 | 109 |
| 5 | 157 |
| 6 | 317 |
| 7 | 389 |
| 8 | 449 |
| 9 | 709 |
| 10 | 1201 |
| 11 | 1237 |
| 12 | 1249 |
| 13 | 1429 |
| 14 | 1621 |
| 15 | 1801 |
| 16 | 2341 |
| 17 | 3001 |
[1,5,17,109,157,317,389,449,709,1201,1237,1249, 1429,1621,1801,2341,3001] |