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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 18 |
| 6 | 34 |
| 7 | 62 |
| 8 | 115 |
| 9 | 211 |
| 10 | 389 |
| 11 | 715 |
| 12 | 1316 |
| 13 | 2420 |
| 14 | 4452 |
| 15 | 8188 |
| 16 | 15061 |
| 17 | 27701 |
| 18 | 50951 |
| 19 | 93713 |
| 20 | 172366 |
| 21 | 317030 |
| 22 | 583110 |
| 23 | 1072506 |
| 24 | 1972647 |
| 25 | 3628263 |
| 26 | 6673417 |
| 27 | 12274327 |
| 28 | 22576008 |
| 29 | 41523752 |
| 30 | 76374088 |
| 31 | 140473848 |
| 32 | 258371689 |
| 33 | 475219625 |
[1,1,3,5,10,18,34,62,115,211,389,715,1316,2420, 4452,8188,15061,27701,50951,93713,172366,317030, 583110,1072506,1972647,3628263,6673417,12274327, 22576008,41523752,76374088,140473848,258371689, 475219625] |