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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 43 |
| 5 | 17 |
| 6 | 47 |
| 7 | 51 |
| 8 | 1697 |
| 9 | 59 |
| 10 | 512 |
| 11 | 521 |
| 12 | 3255 |
| 13 | 8189 |
| 14 | 18951 |
| 15 | 656 |
[1,3,5,43,17,47,51,1697,59,512,521,3255,8189, 18951,656] |