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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 6 |
| 6 | 2 |
| 7 | 15 |
| 8 | 16 |
| 9 | 29 |
| 10 | 71 |
| 11 | 73 |
| 12 | 212 |
| 13 | 276 |
| 14 | 541 |
| 15 | 1016 |
| 16 | 1497 |
| 17 | 3189 |
| 18 | 4825 |
| 19 | 9162 |
| 20 | 16022 |
| 21 | 26763 |
| 22 | 50424 |
| 23 | 82869 |
| 24 | 151851 |
| 25 | 262705 |
| 26 | 456520 |
| 27 | 820328 |
| 28 | 1401913 |
| 29 | 2511824 |
| 30 | 4361521 |
| 31 | 7657481 |
| 32 | 13528913 |
| 33 | 23509678 |
| 34 | 41633002 |
| 35 | 72630919 |
| 36 | 127709888 |
| 37 | 224418509 |
| 38 | 392539055 |
| 39 | 691382201 |
[1,0,1,1,1,6,2,15,16,29,71,73,212,276,541,1016, 1497,3189,4825,9162,16022,26763,50424,82869, 151851,262705,456520,820328,1401913,2511824, 4361521,7657481,13528913,23509678,41633002, 72630919,127709888,224418509,392539055,691382201] |