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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 11 |
| 8 | 16 |
| 9 | 25 |
| 10 | 39 |
| 11 | 61 |
| 12 | 94 |
| 13 | 147 |
| 14 | 227 |
| 15 | 350 |
| 16 | 546 |
| 17 | 846 |
| 18 | 1309 |
| 19 | 2030 |
| 20 | 3147 |
| 21 | 4875 |
| 22 | 7558 |
| 23 | 11715 |
| 24 | 18154 |
| 25 | 28136 |
| 26 | 43609 |
| 27 | 67586 |
| 28 | 104747 |
| 29 | 162346 |
| 30 | 251610 |
| 31 | 389958 |
| 32 | 604381 |
| 33 | 936699 |
| 34 | 1451743 |
| 35 | 2249991 |
| 36 | 3487152 |
| 37 | 5404570 |
| 38 | 8376292 |
| 39 | 12982016 |
| 40 | 20120202 |
| 41 | 31183350 |
| 42 | 48329596 |
| 43 | 74903735 |
[0,0,1,1,3,4,6,11,16,25,39,61,94,147,227,350,546, 846,1309,2030,3147,4875,7558,11715,18154,28136, 43609,67586,104747,162346,251610,389958,604381, 936699,1451743,2249991,3487152,5404570,8376292, 12982016,20120202,31183350,48329596,74903735] |