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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 9 |
| 7 | 13 |
| 8 | 19 |
| 9 | 28 |
| 10 | 41 |
| 11 | 60 |
| 12 | 88 |
| 13 | 129 |
| 14 | 189 |
| 15 | 277 |
| 16 | 406 |
| 17 | 595 |
| 18 | 872 |
| 19 | 1278 |
| 20 | 1873 |
| 21 | 2745 |
| 22 | 4023 |
| 23 | 5896 |
| 24 | 8641 |
| 25 | 12664 |
| 26 | 18560 |
| 27 | 27201 |
| 28 | 39865 |
| 29 | 58425 |
| 30 | 85626 |
| 31 | 125491 |
| 32 | 183916 |
| 33 | 269542 |
| 34 | 395033 |
| 35 | 578949 |
| 36 | 848491 |
| 37 | 1243524 |
| 38 | 1822473 |
| 39 | 2670964 |
| 40 | 3914488 |
| 41 | 5736961 |
[1,1,2,3,4,6,9,13,19,28,41,60,88,129,189,277,406, 595,872,1278,1873,2745,4023,5896,8641,12664,18560, 27201,39865,58425,85626,125491,183916,269542, 395033,578949,848491,1243524,1822473,2670964, 3914488,5736961] |