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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 24 |
| 6 | 48 |
| 7 | 86 |
| 8 | 160 |
| 9 | 282 |
| 10 | 499 |
| 11 | 856 |
| 12 | 1471 |
| 13 | 2466 |
| 14 | 4124 |
| 15 | 6788 |
| 16 | 11110 |
| 17 | 17965 |
| 18 | 28890 |
| 19 | 45995 |
| 20 | 72819 |
| 21 | 114354 |
| 22 | 178577 |
| 23 | 276952 |
| 24 | 427279 |
| 25 | 655199 |
| 26 | 999773 |
| 27 | 1517388 |
| 28 | 2292377 |
| 29 | 3446462 |
| 30 | 5159352 |
| 31 | 7689517 |
| 32 | 11414606 |
| 33 | 16875813 |
| 34 | 24856366 |
| 35 | 36474188 |
| 36 | 53334376 |
| 37 | 77717219 |
| 38 | 112874158 |
| 39 | 163403202 |
[1,1,3,6,13,24,48,86,160,282,499,856,1471,2466, 4124,6788,11110,17965,28890,45995,72819,114354, 178577,276952,427279,655199,999773,1517388, 2292377,3446462,5159352,7689517,11414606,16875813, 24856366,36474188,53334376,77717219,112874158, 163403202] |