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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 7 |
| 3 | 14 |
| 4 | 27 |
| 5 | 53 |
| 6 | 103 |
| 7 | 199 |
| 8 | 383 |
| 9 | 738 |
| 10 | 1422 |
| 11 | 2739 |
| 12 | 5274 |
| 13 | 10156 |
| 14 | 19556 |
| 15 | 37657 |
| 16 | 72511 |
| 17 | 139625 |
| 18 | 268857 |
| 19 | 517702 |
| 20 | 996870 |
| 21 | 1919539 |
| 22 | 3696200 |
| 23 | 7117277 |
| 24 | 13704787 |
| 25 | 26389471 |
| 26 | 50814668 |
| 27 | 97846995 |
| 28 | 188410842 |
| 29 | 362797502 |
| 30 | 698590519 |
| 31 | 1345182118 |
| 32 | 2590236887 |
[2,3,7,14,27,53,103,199,383,738,1422,2739,5274, 10156,19556,37657,72511,139625,268857,517702, 996870,1919539,3696200,7117277,13704787,26389471, 50814668,97846995,188410842,362797502,698590519, 1345182118,2590236887] |