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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 22 |
| 8 | 36 |
| 9 | 56 |
| 10 | 84 |
| 11 | 133 |
| 12 | 208 |
| 13 | 318 |
| 14 | 495 |
| 15 | 772 |
| 16 | 1192 |
| 17 | 1846 |
| 18 | 2870 |
| 19 | 4448 |
| 20 | 6886 |
| 21 | 10686 |
| 22 | 16576 |
| 23 | 25679 |
| 24 | 39819 |
| 25 | 61763 |
| 26 | 95732 |
| 27 | 148415 |
| 28 | 230158 |
| 29 | 356829 |
| 30 | 553197 |
| 31 | 857766 |
| 32 | 1329946 |
| 33 | 2061917 |
| 34 | 3196940 |
| 35 | 4956807 |
| 36 | 7685148 |
| 37 | 11915388 |
| 38 | 18474452 |
| 39 | 28643620 |
[2,3,4,6,10,15,22,36,56,84,133,208,318,495,772, 1192,1846,2870,4448,6886,10686,16576,25679,39819, 61763,95732,148415,230158,356829,553197,857766, 1329946,2061917,3196940,4956807,7685148,11915388, 18474452,28643620] |