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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 9 |
| 8 | 13 |
| 9 | 37 |
| 10 | 64 |
| 11 | 95 |
| 12 | 188 |
| 13 | 326 |
| 14 | 513 |
| 15 | 875 |
| 16 | 1449 |
| 17 | 2302 |
| 18 | 4289 |
| 19 | 7422 |
| 20 | 12072 |
| 21 | 21561 |
| 22 | 37559 |
| 23 | 62571 |
| 24 | 107806 |
| 25 | 184027 |
| 26 | 306628 |
| 27 | 532661 |
| 28 | 915705 |
| 29 | 1537768 |
| 30 | 2654311 |
| 31 | 4574383 |
| 32 | 7752577 |
| 33 | 13292546 |
| 34 | 22778306 |
| 35 | 38625110 |
| 36 | 66213867 |
| 37 | 113475693 |
| 38 | 192821642 |
| 39 | 330086669 |
[1,1,1,2,3,4,6,9,13,37,64,95,188,326,513,875,1449, 2302,4289,7422,12072,21561,37559,62571,107806, 184027,306628,532661,915705,1537768,2654311, 4574383,7752577,13292546,22778306,38625110, 66213867,113475693,192821642,330086669] |