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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 1 |
| 6 | 0 |
| 7 | 6 |
| 8 | 6 |
| 9 | 1 |
| 10 | 0 |
| 11 | 10 |
| 12 | 21 |
| 13 | 9 |
| 14 | 1 |
| 15 | 0 |
| 16 | 15 |
| 17 | 56 |
| 18 | 45 |
| 19 | 12 |
| 20 | 1 |
| 21 | 0 |
| 22 | 21 |
| 23 | 126 |
| 24 | 165 |
| 25 | 78 |
| 26 | 15 |
| 27 | 1 |
| 28 | 0 |
| 29 | 28 |
| 30 | 252 |
| 31 | 495 |
| 32 | 364 |
| 33 | 120 |
| 34 | 18 |
| 35 | 1 |
| 36 | 0 |
| 37 | 36 |
| 38 | 462 |
| 39 | 1287 |
| 40 | 1365 |
| 41 | 680 |
| 42 | 171 |
| 43 | 21 |
| 44 | 1 |
| 45 | 0 |
| 46 | 45 |
| 47 | 792 |
| 48 | 3003 |
| 49 | 4368 |
| 50 | 3060 |
| 51 | 1140 |
| 52 | 231 |
| 53 | 24 |
| 54 | 1 |
[1,0,1,0,3,1,0,6,6,1,0,10,21,9,1,0,15,56,45,12,1, 0,21,126,165,78,15,1,0,28,252,495,364,120,18,1,0, 36,462,1287,1365,680,171,21,1,0,45,792,3003,4368, 3060,1140,231,24,1] |