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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 6 |
| 4 | 6 |
| 5 | 18 |
| 6 | 33 |
| 7 | 55 |
| 8 | 115 |
| 9 | 185 |
| 10 | 373 |
| 11 | 604 |
| 12 | 1113 |
| 13 | 1903 |
| 14 | 3251 |
| 15 | 5678 |
| 16 | 9350 |
| 17 | 16153 |
| 18 | 26420 |
| 19 | 44561 |
| 20 | 72912 |
| 21 | 120150 |
| 22 | 196329 |
| 23 | 317988 |
| 24 | 516881 |
| 25 | 827778 |
| 26 | 1333570 |
| 27 | 2120492 |
| 28 | 3381947 |
| 29 | 5347513 |
| 30 | 8447482 |
| 31 | 13285450 |
| 32 | 20813814 |
| 33 | 32547272 |
| 34 | 50638328 |
| 35 | 78707858 |
| 36 | 121738479 |
[1,1,1,6,6,18,33,55,115,185,373,604,1113,1903, 3251,5678,9350,16153,26420,44561,72912,120150, 196329,317988,516881,827778,1333570,2120492, 3381947,5347513,8447482,13285450,20813814, 32547272,50638328,78707858,121738479] |