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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 22 |
| 6 | 46 |
| 7 | 91 |
| 8 | 182 |
| 9 | 371 |
| 10 | 746 |
| 11 | 1498 |
| 12 | 3027 |
| 13 | 6102 |
| 14 | 12283 |
| 15 | 24766 |
| 16 | 49926 |
| 17 | 100587 |
| 18 | 202726 |
| 19 | 408611 |
| 20 | 823442 |
| 21 | 1659506 |
| 22 | 3344611 |
| 23 | 6740518 |
| 24 | 13584427 |
| 25 | 27377702 |
| 26 | 55175838 |
| 27 | 111198651 |
| 28 | 224105366 |
| 29 | 451652627 |
| 30 | 910240506 |
| 31 | 1834460106 |
| 32 | 3697093427 |
[2,3,6,11,22,46,91,182,371,746,1498,3027,6102, 12283,24766,49926,100587,202726,408611,823442, 1659506,3344611,6740518,13584427,27377702, 55175838,111198651,224105366,451652627,910240506, 1834460106,3697093427] |