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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 4 |
| 6 | 6 |
| 7 | 10 |
| 8 | 15 |
| 9 | 27 |
| 10 | 43 |
| 11 | 75 |
| 12 | 124 |
| 13 | 216 |
| 14 | 364 |
| 15 | 634 |
| 16 | 1081 |
| 17 | 1879 |
| 18 | 3229 |
| 19 | 5609 |
| 20 | 9680 |
| 21 | 16809 |
| 22 | 29077 |
| 23 | 50482 |
| 24 | 87452 |
| 25 | 151811 |
| 26 | 263201 |
| 27 | 456871 |
| 28 | 792468 |
| 29 | 1375530 |
| 30 | 2386580 |
| 31 | 4142425 |
| 32 | 7188332 |
| 33 | 12476743 |
| 34 | 21652780 |
| 35 | 37582311 |
| 36 | 65225643 |
| 37 | 113210394 |
| 38 | 196487131 |
| 39 | 341036576 |
[1,1,1,2,2,4,6,10,15,27,43,75,124,216,364,634, 1081,1879,3229,5609,9680,16809,29077,50482,87452, 151811,263201,456871,792468,1375530,2386580, 4142425,7188332,12476743,21652780,37582311, 65225643,113210394,196487131,341036576] |