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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 3 |
| 10 | 4 |
| 11 | 5 |
| 12 | 6 |
| 13 | 9 |
| 14 | 13 |
| 15 | 18 |
| 16 | 23 |
| 17 | 31 |
| 18 | 43 |
| 19 | 60 |
| 20 | 81 |
| 21 | 109 |
| 22 | 148 |
| 23 | 203 |
| 24 | 278 |
| 25 | 378 |
| 26 | 513 |
| 27 | 698 |
| 28 | 953 |
| 29 | 1300 |
| 30 | 1770 |
| 31 | 2408 |
| 32 | 3280 |
| 33 | 4471 |
| 34 | 6093 |
| 35 | 8298 |
| 36 | 11300 |
| 37 | 15393 |
| 38 | 20973 |
| 39 | 28573 |
| 40 | 38920 |
| 41 | 53013 |
| 42 | 72216 |
| 43 | 98381 |
| 44 | 134021 |
[1,0,0,0,1,1,1,1,2,3,4,5,6,9,13,18,23,31,43,60,81, 109,148,203,278,378,513,698,953,1300,1770,2408, 3280,4471,6093,8298,11300,15393,20973,28573,38920, 53013,72216,98381,134021] |