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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 16 |
| 6 | 30 |
| 7 | 58 |
| 8 | 113 |
| 9 | 223 |
| 10 | 443 |
| 11 | 882 |
| 12 | 1760 |
| 13 | 3516 |
| 14 | 7027 |
| 15 | 14049 |
| 16 | 28093 |
| 17 | 56180 |
| 18 | 112354 |
| 19 | 224702 |
| 20 | 449397 |
| 21 | 898787 |
| 22 | 1797567 |
| 23 | 3595126 |
| 24 | 7190244 |
| 25 | 14380480 |
| 26 | 28760951 |
| 27 | 57521893 |
| 28 | 115043777 |
| 29 | 230087544 |
| 30 | 460175078 |
| 31 | 920350146 |
| 32 | 1840700281 |
| 33 | 3681400551 |
[1,2,3,5,9,16,30,58,113,223,443,882,1760,3516, 7027,14049,28093,56180,112354,224702,449397, 898787,1797567,3595126,7190244,14380480,28760951, 57521893,115043777,230087544,460175078,920350146, 1840700281,3681400551] |