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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 5 |
| 7 | 10 |
| 8 | 17 |
| 9 | 26 |
| 10 | 38 |
| 11 | 59 |
| 12 | 101 |
| 13 | 182 |
| 14 | 326 |
| 15 | 564 |
| 16 | 945 |
| 17 | 1566 |
| 18 | 2622 |
| 19 | 4476 |
| 20 | 7750 |
| 21 | 13455 |
| 22 | 23231 |
| 23 | 39837 |
| 24 | 68101 |
| 25 | 116611 |
| 26 | 200526 |
| 27 | 346137 |
| 28 | 598438 |
| 29 | 1034227 |
| 30 | 1785400 |
| 31 | 3080418 |
| 32 | 5317009 |
| 33 | 9187567 |
| 34 | 15893830 |
| 35 | 27515434 |
| 36 | 47647774 |
| 37 | 82513447 |
| 38 | 142902640 |
| 39 | 247553410 |
| 40 | 429020710 |
| 41 | 743846284 |
[1,1,1,1,1,2,5,10,17,26,38,59,101,182,326,564,945, 1566,2622,4476,7750,13455,23231,39837,68101, 116611,200526,346137,598438,1034227,1785400, 3080418,5317009,9187567,15893830,27515434, 47647774,82513447,142902640,247553410,429020710, 743846284] |