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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 9 |
| 3 | 15 |
| 4 | 20 |
| 5 | 24 |
| 6 | 31 |
| 7 | 35 |
| 8 | 42 |
| 9 | 49 |
| 10 | 59 |
| 11 | 63 |
| 12 | 72 |
| 13 | 76 |
| 14 | 84 |
| 15 | 95 |
| 16 | 106 |
| 17 | 110 |
| 18 | 121 |
| 19 | 125 |
[6,9,15,20,24,31,35,42,49,59,63,72,76,84,95,106, 110,121,125] |