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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 41 |
| 6 | 61 |
| 7 | 107 |
| 8 | 197 |
| 9 | 311 |
| 10 | 617 |
| 11 | 1229 |
| 12 | 2381 |
| 13 | 4649 |
| 14 | 8861 |
| 15 | 17027 |
| 16 | 33809 |
| 17 | 67409 |
| 18 | 134681 |
| 19 | 267719 |
| 20 | 535349 |
| 21 | 1069217 |
| 22 | 2138399 |
| 23 | 4275641 |
| 24 | 8545697 |
| 25 | 17091377 |
| 26 | 34182749 |
| 27 | 68365469 |
| 28 | 136730639 |
| 29 | 273461159 |
| 30 | 546917141 |
| 31 | 1093813727 |
| 32 | 2187610991 |
| 33 | 4375221077 |
| 34 | 8750432231 |
[2,5,11,23,41,61,107,197,311,617,1229,2381,4649, 8861,17027,33809,67409,134681,267719,535349, 1069217,2138399,4275641,8545697,17091377,34182749, 68365469,136730639,273461159,546917141,1093813727, 2187610991,4375221077,8750432231] |