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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 6 |
| 8 | 9 |
| 9 | 15 |
| 10 | 24 |
| 11 | 37 |
| 12 | 58 |
| 13 | 92 |
| 14 | 149 |
| 15 | 243 |
| 16 | 393 |
| 17 | 629 |
| 18 | 1004 |
| 19 | 1603 |
| 20 | 2564 |
| 21 | 4106 |
| 22 | 6571 |
| 23 | 10508 |
| 24 | 16807 |
| 25 | 26895 |
| 26 | 43060 |
| 27 | 68952 |
| 28 | 110392 |
| 29 | 176696 |
| 30 | 282798 |
| 31 | 452616 |
| 32 | 724441 |
| 33 | 1159537 |
| 34 | 1855919 |
| 35 | 2970476 |
| 36 | 4754382 |
| 37 | 7609712 |
| 38 | 12180021 |
| 39 | 19495286 |
| 40 | 31203935 |
| 41 | 49944397 |
[0,0,1,2,3,4,6,9,15,24,37,58,92,149,243,393,629, 1004,1603,2564,4106,6571,10508,16807,26895,43060, 68952,110392,176696,282798,452616,724441,1159537, 1855919,2970476,4754382,7609712,12180021,19495286, 31203935,49944397] |