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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 8 |
| 7 | 12 |
| 8 | 18 |
| 9 | 26 |
| 10 | 37 |
| 11 | 53 |
| 12 | 76 |
| 13 | 108 |
| 14 | 154 |
| 15 | 218 |
| 16 | 309 |
| 17 | 437 |
| 18 | 620 |
| 19 | 876 |
| 20 | 1242 |
| 21 | 1754 |
| 22 | 2485 |
| 23 | 3509 |
| 24 | 4972 |
| 25 | 7020 |
| 26 | 9946 |
| 27 | 14042 |
| 28 | 19893 |
| 29 | 28085 |
| 30 | 39788 |
| 31 | 56172 |
| 32 | 79578 |
| 33 | 112346 |
| 34 | 159157 |
| 35 | 224693 |
| 36 | 318316 |
| 37 | 449388 |
| 38 | 636634 |
| 39 | 898778 |
| 40 | 1273269 |
| 41 | 1797557 |
| 42 | 2546540 |
| 43 | 3595116 |
| 44 | 5093082 |
| 45 | 7190234 |
| 46 | 10186165 |
| 47 | 14380469 |
[0,1,2,3,5,8,12,18,26,37,53,76,108,154,218,309, 437,620,876,1242,1754,2485,3509,4972,7020,9946, 14042,19893,28085,39788,56172,79578,112346,159157, 224693,318316,449388,636634,898778,1273269, 1797557,2546540,3595116,5093082,7190234,10186165, 14380469] |