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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 0 |
| 12 | 1 |
| 13 | 1 |
| 14 | 2 |
| 15 | 4 |
| 16 | 3 |
| 17 | 2 |
| 18 | 5 |
| 19 | 15 |
| 20 | 21 |
| 21 | 66 |
| 22 | 37 |
| 23 | 51 |
| 24 | 144 |
| 25 | 263 |
| 26 | 601 |
| 27 | 1333 |
| 28 | 2119 |
| 29 | 2154 |
| 30 | 2189 |
| 31 | 3280 |
| 32 | 12405 |
| 33 | 55329 |
| 34 | 160895 |
| 35 | 588081 |
| 36 | 849906 |
| 37 | 1258119 |
| 38 | 1233262 |
| 39 | 2478647 |
| 40 | 4305500 |
| 41 | 17278636 |
| 42 | 47424179 |
| 43 | 153686631 |
| 44 | 396952852 |
| 45 | 1043844982 |
[1,0,0,1,0,1,0,0,1,1,1,0,1,1,2,4,3,2,5,15,21,66, 37,51,144,263,601,1333,2119,2154,2189,3280,12405, 55329,160895,588081,849906,1258119,1233262, 2478647,4305500,17278636,47424179,153686631, 396952852,1043844982] |