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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 7 |
| 6 | 8 |
| 7 | 9 |
| 8 | 11 |
| 9 | 13 |
| 10 | 17 |
| 11 | 20 |
| 12 | 23 |
| 13 | 25 |
| 14 | 31 |
| 15 | 43 |
| 16 | 47 |
| 17 | 85 |
| 18 | 101 |
| 19 | 117 |
| 20 | 173 |
| 21 | 224 |
| 22 | 277 |
| 23 | 281 |
| 24 | 349 |
| 25 | 359 |
| 26 | 365 |
| 27 | 403 |
| 28 | 521 |
| 29 | 629 |
| 30 | 691 |
| 31 | 709 |
| 32 | 819 |
| 33 | 1037 |
[2,3,4,5,7,8,9,11,13,17,20,23,25,31,43,47,85,101, 117,173,224,277,281,349,359,365,403,521,629,691, 709,819,1037] |