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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 20 |
| 6 | 37 |
| 7 | 68 |
| 8 | 125 |
| 9 | 227 |
| 10 | 394 |
| 11 | 672 |
| 12 | 1151 |
| 13 | 1983 |
| 14 | 3373 |
| 15 | 5703 |
| 16 | 9508 |
| 17 | 15640 |
| 18 | 25293 |
| 19 | 40732 |
| 20 | 65032 |
| 21 | 103390 |
| 22 | 162830 |
| 23 | 255543 |
| 24 | 397013 |
| 25 | 613104 |
| 26 | 938477 |
| 27 | 1431068 |
| 28 | 2162964 |
| 29 | 3255845 |
| 30 | 4860428 |
| 31 | 7223861 |
| 32 | 10649867 |
| 33 | 15628073 |
| 34 | 22747718 |
| 35 | 32963838 |
| 36 | 47397514 |
| 37 | 67825949 |
| 38 | 96317070 |
[1,2,3,6,11,20,37,68,125,227,394,672,1151,1983, 3373,5703,9508,15640,25293,40732,65032,103390, 162830,255543,397013,613104,938477,1431068, 2162964,3255845,4860428,7223861,10649867,15628073, 22747718,32963838,47397514,67825949,96317070] |