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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 14 |
| 6 | 17 |
| 7 | 19 |
| 8 | 29 |
| 9 | 40 |
| 10 | 56 |
| 11 | 62 |
| 12 | 82 |
| 13 | 104 |
| 14 | 121 |
| 15 | 181 |
| 16 | 286 |
| 17 | 1307 |
| 18 | 2197 |
| 19 | 5764 |
| 20 | 37120 |
| 21 | 91715 |
[1,2,4,5,14,17,19,29,40,56,62,82,104,121,181,286, 1307,2197,5764,37120,91715] |