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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 9 |
| 5 | 19 |
| 6 | 36 |
| 7 | 62 |
| 8 | 110 |
| 9 | 197 |
| 10 | 332 |
| 11 | 559 |
| 12 | 947 |
| 13 | 1548 |
| 14 | 2538 |
| 15 | 4133 |
| 16 | 6610 |
| 17 | 10536 |
| 18 | 16710 |
| 19 | 26191 |
| 20 | 40879 |
| 21 | 63465 |
| 22 | 97732 |
| 23 | 149852 |
| 24 | 228658 |
| 25 | 346788 |
| 26 | 523694 |
| 27 | 787503 |
| 28 | 1178325 |
| 29 | 1756294 |
| 30 | 2607686 |
| 31 | 3855676 |
| 32 | 5680851 |
| 33 | 8341007 |
| 34 | 12202794 |
| 35 | 17795283 |
| 36 | 25869297 |
| 37 | 37487313 |
[1,1,2,6,9,19,36,62,110,197,332,559,947,1548,2538, 4133,6610,10536,16710,26191,40879,63465,97732, 149852,228658,346788,523694,787503,1178325, 1756294,2607686,3855676,5680851,8341007,12202794, 17795283,25869297,37487313] |