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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 15 |
| 3 | 21 |
| 4 | 28 |
| 5 | 36 |
| 6 | 45 |
| 7 | 78 |
| 8 | 91 |
| 9 | 171 |
| 10 | 300 |
| 11 | 595 |
| 12 | 990 |
| 13 | 1711 |
| 14 | 5565 |
| 15 | 6555 |
| 16 | 66066 |
| 17 | 333336 |
[10,15,21,28,36,45,78,91,171,300,595,990,1711, 5565,6555,66066,333336] |