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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 15 |
| 7 | 22 |
| 8 | 34 |
| 9 | 48 |
| 10 | 70 |
| 11 | 97 |
| 12 | 137 |
| 13 | 186 |
| 14 | 255 |
| 15 | 341 |
| 16 | 459 |
| 17 | 605 |
| 18 | 800 |
| 19 | 1042 |
| 20 | 1359 |
| 21 | 1751 |
| 22 | 2256 |
| 23 | 2879 |
| 24 | 3672 |
| 25 | 4645 |
| 26 | 5869 |
| 27 | 7367 |
| 28 | 9234 |
| 29 | 11508 |
| 30 | 14319 |
| 31 | 17730 |
| 32 | 21916 |
| 33 | 26975 |
| 34 | 33143 |
| 35 | 40570 |
| 36 | 49575 |
| 37 | 60376 |
| 38 | 73402 |
| 39 | 88974 |
| 40 | 107666 |
| 41 | 129933 |
| 42 | 156546 |
| 43 | 188148 |
| 44 | 225767 |
| 45 | 270300 |
| 46 | 323115 |
| 47 | 385453 |
[1,1,2,3,6,9,15,22,34,48,70,97,137,186,255,341, 459,605,800,1042,1359,1751,2256,2879,3672,4645, 5869,7367,9234,11508,14319,17730,21916,26975, 33143,40570,49575,60376,73402,88974,107666,129933, 156546,188148,225767,270300,323115,385453] |