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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 14 |
| 7 | 23 |
| 8 | 40 |
| 9 | 67 |
| 10 | 117 |
| 11 | 198 |
| 12 | 346 |
| 13 | 590 |
| 14 | 1032 |
| 15 | 1769 |
| 16 | 3096 |
| 17 | 5328 |
| 18 | 9329 |
| 19 | 16103 |
| 20 | 28205 |
| 21 | 48801 |
| 22 | 85500 |
| 23 | 148216 |
| 24 | 259733 |
| 25 | 450952 |
| 26 | 790387 |
| 27 | 1374044 |
| 28 | 2408653 |
| 29 | 4191814 |
| 30 | 7349019 |
| 31 | 12801243 |
| 32 | 22445281 |
| 33 | 39127766 |
| 34 | 68611494 |
| 35 | 119687036 |
| 36 | 209890344 |
| 37 | 366348367 |
| 38 | 642493426 |
| 39 | 1121992447 |
| 40 | 1967839835 |
[1,1,2,3,5,8,14,23,40,67,117,198,346,590,1032, 1769,3096,5328,9329,16103,28205,48801,85500, 148216,259733,450952,790387,1374044,2408653, 4191814,7349019,12801243,22445281,39127766, 68611494,119687036,209890344,366348367,642493426, 1121992447,1967839835] |