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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 12 |
| 7 | 19 |
| 8 | 29 |
| 9 | 44 |
| 10 | 68 |
| 11 | 100 |
| 12 | 153 |
| 13 | 227 |
| 14 | 342 |
| 15 | 509 |
| 16 | 759 |
| 17 | 1129 |
| 18 | 1678 |
| 19 | 2492 |
| 20 | 3699 |
| 21 | 5477 |
| 22 | 8121 |
| 23 | 12015 |
| 24 | 17795 |
| 25 | 26313 |
| 26 | 38924 |
| 27 | 57541 |
| 28 | 85065 |
| 29 | 125712 |
| 30 | 185758 |
| 31 | 274431 |
| 32 | 405420 |
| 33 | 598815 |
| 34 | 884465 |
| 35 | 1306165 |
| 36 | 1928943 |
| 37 | 2848360 |
| 38 | 4205979 |
| 39 | 6210289 |
| 40 | 9169540 |
[1,1,2,3,5,8,12,19,29,44,68,100,153,227,342,509, 759,1129,1678,2492,3699,5477,8121,12015,17795, 26313,38924,57541,85065,125712,185758,274431, 405420,598815,884465,1306165,1928943,2848360, 4205979,6210289,9169540] |