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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 1 |
| 5 | 1 |
| 6 | 4 |
| 7 | 3 |
| 8 | 4 |
| 9 | 8 |
| 10 | 9 |
| 11 | 12 |
| 12 | 19 |
| 13 | 24 |
| 14 | 33 |
| 15 | 48 |
| 16 | 64 |
| 17 | 88 |
| 18 | 124 |
| 19 | 169 |
| 20 | 233 |
| 21 | 324 |
| 22 | 445 |
| 23 | 614 |
| 24 | 850 |
| 25 | 1171 |
| 26 | 1616 |
| 27 | 2233 |
| 28 | 3080 |
| 29 | 4251 |
| 30 | 5870 |
| 31 | 8100 |
| 32 | 11180 |
| 33 | 15434 |
| 34 | 21301 |
| 35 | 29401 |
| 36 | 40584 |
| 37 | 56015 |
| 38 | 77316 |
| 39 | 106720 |
| 40 | 147301 |
| 41 | 203316 |
| 42 | 280635 |
| 43 | 387352 |
| 44 | 534653 |
[1,0,0,2,1,1,4,3,4,8,9,12,19,24,33,48,64,88,124, 169,233,324,445,614,850,1171,1616,2233,3080,4251, 5870,8100,11180,15434,21301,29401,40584,56015, 77316,106720,147301,203316,280635,387352,534653] |