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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 7 |
| 7 | 9 |
| 8 | 13 |
| 9 | 26 |
| 10 | 42 |
| 11 | 153 |
| 12 | 188 |
| 13 | 204 |
| 14 | 282 |
| 15 | 699 |
| 16 | 2886 |
| 17 | 11597 |
[1,2,3,5,6,7,9,13,26,42,153,188,204,282,699,2886, 11597] |