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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 17 |
| 5 | 40 |
| 6 | 94 |
| 7 | 212 |
| 8 | 464 |
| 9 | 980 |
| 10 | 2010 |
| 11 | 4011 |
| 12 | 7820 |
| 13 | 14927 |
| 14 | 27968 |
| 15 | 51519 |
| 16 | 93450 |
| 17 | 167106 |
| 18 | 294902 |
| 19 | 514054 |
| 20 | 885804 |
| 21 | 1509945 |
| 22 | 2547768 |
| 23 | 4257734 |
| 24 | 7050954 |
| 25 | 11576404 |
| 26 | 18851628 |
| 27 | 30461253 |
| 28 | 48857762 |
| 29 | 77813497 |
| 30 | 123097971 |
| 31 | 193485805 |
| 32 | 302251865 |
| 33 | 469376012 |
[1,3,7,17,40,94,212,464,980,2010,4011,7820,14927, 27968,51519,93450,167106,294902,514054,885804, 1509945,2547768,4257734,7050954,11576404,18851628, 30461253,48857762,77813497,123097971,193485805, 302251865,469376012] |