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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 3 |
| 9 | 5 |
| 10 | 7 |
| 11 | 10 |
| 12 | 17 |
| 13 | 26 |
| 14 | 40 |
| 15 | 65 |
| 16 | 104 |
| 17 | 166 |
| 18 | 272 |
| 19 | 442 |
| 20 | 720 |
| 21 | 1186 |
| 22 | 1954 |
| 23 | 3222 |
| 24 | 5346 |
| 25 | 8881 |
| 26 | 14778 |
| 27 | 24668 |
| 28 | 41254 |
| 29 | 69088 |
| 30 | 115959 |
| 31 | 194925 |
| 32 | 328123 |
| 33 | 553200 |
| 34 | 933944 |
| 35 | 1578614 |
| 36 | 2671656 |
| 37 | 4526654 |
| 38 | 7677736 |
| 39 | 13035809 |
| 40 | 22154806 |
| 41 | 37687152 |
| 42 | 64165838 |
[0,1,1,1,1,1,2,2,3,5,7,10,17,26,40,65,104,166,272, 442,720,1186,1954,3222,5346,8881,14778,24668, 41254,69088,115959,194925,328123,553200,933944, 1578614,2671656,4526654,7677736,13035809,22154806, 37687152,64165838] |