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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 3 |
| 6 | 1 |
| 7 | 0 |
| 8 | 4 |
| 9 | 0 |
| 10 | 1 |
| 11 | 0 |
| 12 | 5 |
| 13 | 0 |
| 14 | 15 |
| 15 | 1 |
| 16 | 0 |
| 17 | 6 |
| 18 | 0 |
| 19 | 21 |
| 20 | 0 |
| 21 | 1 |
| 22 | 0 |
| 23 | 7 |
| 24 | 0 |
| 25 | 28 |
| 26 | 0 |
| 27 | 84 |
| 28 | 1 |
| 29 | 0 |
| 30 | 8 |
| 31 | 0 |
| 32 | 36 |
| 33 | 0 |
| 34 | 120 |
| 35 | 0 |
| 36 | 1 |
| 37 | 0 |
| 38 | 9 |
| 39 | 0 |
| 40 | 45 |
| 41 | 0 |
| 42 | 165 |
| 43 | 0 |
| 44 | 495 |
| 45 | 1 |
| 46 | 0 |
| 47 | 10 |
| 48 | 0 |
| 49 | 55 |
| 50 | 0 |
| 51 | 220 |
| 52 | 0 |
| 53 | 715 |
| 54 | 0 |
| 55 | 1 |
| 56 | 0 |
| 57 | 11 |
| 58 | 0 |
| 59 | 66 |
| 60 | 0 |
| 61 | 286 |
| 62 | 0 |
| 63 | 1001 |
| 64 | 0 |
| 65 | 3003 |
| 66 | 1 |
| 67 | 0 |
| 68 | 12 |
| 69 | 0 |
| 70 | 78 |
| 71 | 0 |
| 72 | 364 |
| 73 | 0 |
| 74 | 1365 |
| 75 | 0 |
| 76 | 4368 |
| 77 | 0 |
[1,1,0,1,0,3,1,0,4,0,1,0,5,0,15,1,0,6,0,21,0,1,0, 7,0,28,0,84,1,0,8,0,36,0,120,0,1,0,9,0,45,0,165,0, 495,1,0,10,0,55,0,220,0,715,0,1,0,11,0,66,0,286,0, 1001,0,3003,1,0,12,0,78,0,364,0,1365,0,4368,0] |