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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 12 |
| 5 | 23 |
| 6 | 45 |
| 7 | 89 |
| 8 | 178 |
| 9 | 356 |
| 10 | 707 |
| 11 | 1409 |
| 12 | 2822 |
| 13 | 5639 |
| 14 | 11273 |
| 15 | 22546 |
| 16 | 45088 |
| 17 | 90165 |
| 18 | 180315 |
| 19 | 360637 |
| 20 | 721258 |
| 21 | 1442491 |
| 22 | 2884973 |
| 23 | 5769941 |
| 24 | 11539858 |
| 25 | 23079721 |
| 26 | 46159395 |
| 27 | 92318705 |
| 28 | 184637321 |
| 29 | 369274467 |
| 30 | 738548867 |
| 31 | 1477097749 |
| 32 | 2954195452 |
| 33 | 5908390605 |
| 34 | 11816780739 |
[2,3,7,12,23,45,89,178,356,707,1409,2822,5639, 11273,22546,45088,90165,180315,360637,721258, 1442491,2884973,5769941,11539858,23079721, 46159395,92318705,184637321,369274467,738548867, 1477097749,2954195452,5908390605,11816780739] |