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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 12 |
| 6 | 16 |
| 7 | 20 |
| 8 | 21 |
| 9 | 33 |
| 10 | 75 |
| 11 | 77 |
| 12 | 82 |
| 13 | 184 |
| 14 | 293 |
| 15 | 402 |
| 16 | 455 |
| 17 | 474 |
| 18 | 651 |
| 19 | 652 |
[1,3,5,6,12,16,20,21,33,75,77,82,184,293,402,455, 474,651,652] |