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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 15 |
| 5 | 16 |
| 6 | 21 |
| 7 | 33 |
| 8 | 39 |
| 9 | 43 |
| 10 | 66 |
| 11 | 108 |
| 12 | 109 |
| 13 | 111 |
| 14 | 126 |
| 15 | 153 |
| 16 | 195 |
| 17 | 339 |
| 18 | 1359 |
[1,3,10,15,16,21,33,39,43,66,108,109,111,126,153, 195,339,1359] |