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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 15 |
| 7 | 18 |
| 8 | 23 |
| 9 | 39 |
| 10 | 147 |
| 11 | 1104 |
| 12 | 1158 |
| 13 | 1466 |
| 14 | 1514 |
| 15 | 1935 |
| 16 | 2149 |
| 17 | 2203 |
| 18 | 2553 |
| 19 | 2730 |
| 20 | 7169 |
| 21 | 9807 |
| 22 | 17684 |
| 23 | 23828 |
| 24 | 25824 |
| 25 | 27207 |
| 26 | 55679 |
| 27 | 94964 |
| 28 | 122977 |
| 29 | 206927 |
[1,2,3,7,9,15,18,23,39,147,1104,1158,1466,1514, 1935,2149,2203,2553,2730,7169,9807,17684,23828, 25824,27207,55679,94964,122977,206927] |