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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 11 |
| 6 | 18 |
| 7 | 31 |
| 8 | 44 |
| 9 | 83 |
| 10 | 135 |
| 11 | 239 |
| 12 | 436 |
| 13 | 818 |
| 14 | 1436 |
| 15 | 2773 |
| 16 | 4695 |
| 17 | 9244 |
| 18 | 17022 |
| 19 | 32948 |
| 20 | 58158 |
| 21 | 116040 |
| 22 | 214188 |
| 23 | 423902 |
| 24 | 791950 |
| 25 | 1554834 |
| 26 | 2904470 |
| 27 | 5725780 |
| 28 | 10536383 |
| 29 | 21070698 |
| 30 | 40748211 |
| 31 | 79634658 |
| 32 | 148530950 |
| 33 | 296094802 |
| 34 | 561919901 |
[2,3,5,7,11,18,31,44,83,135,239,436,818,1436,2773, 4695,9244,17022,32948,58158,116040,214188,423902, 791950,1554834,2904470,5725780,10536383,21070698, 40748211,79634658,148530950,296094802,561919901] |