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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 17 |
| 4 | 19 |
| 5 | 31 |
| 6 | 43 |
| 7 | 51 |
| 8 | 163 |
| 9 | 215 |
| 10 | 269 |
| 11 | 297 |
| 12 | 457 |
| 13 | 599 |
| 14 | 633 |
| 15 | 795 |
| 16 | 999 |
| 17 | 1027 |
| 18 | 1261 |
| 19 | 2567 |
| 20 | 14315 |
| 21 | 39505 |
| 22 | 44725 |
[3,7,17,19,31,43,51,163,215,269,297,457,599,633, 795,999,1027,1261,2567,14315,39505,44725] |