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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 1 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 1 |
| 18 | 0 |
| 19 | 1 |
| 20 | 2 |
| 21 | 0 |
| 22 | 1 |
| 23 | 0 |
| 24 | 1 |
| 25 | 2 |
| 26 | 1 |
| 27 | 3 |
| 28 | 3 |
| 29 | 1 |
| 30 | 2 |
| 31 | 1 |
| 32 | 3 |
| 33 | 5 |
| 34 | 3 |
| 35 | 6 |
| 36 | 5 |
| 37 | 3 |
| 38 | 5 |
| 39 | 3 |
| 40 | 8 |
| 41 | 9 |
| 42 | 7 |
| 43 | 11 |
| 44 | 8 |
| 45 | 8 |
| 46 | 10 |
| 47 | 9 |
| 48 | 15 |
| 49 | 16 |
| 50 | 15 |
| 51 | 19 |
| 52 | 15 |
| 53 | 16 |
| 54 | 20 |
| 55 | 19 |
| 56 | 28 |
| 57 | 28 |
| 58 | 27 |
| 59 | 33 |
| 60 | 27 |
| 61 | 32 |
| 62 | 36 |
| 63 | 36 |
| 64 | 48 |
| 65 | 48 |
| 66 | 49 |
| 67 | 55 |
| 68 | 48 |
| 69 | 57 |
| 70 | 64 |
| 71 | 65 |
| 72 | 82 |
| 73 | 79 |
| 74 | 83 |
| 75 | 92 |
| 76 | 83 |
| 77 | 100 |
| 78 | 106 |
| 79 | 112 |
| 80 | 134 |
| 81 | 129 |
[0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,1,2,0,1,0,1, 2,1,3,3,1,2,1,3,5,3,6,5,3,5,3,8,9,7,11,8,8,10,9, 15,16,15,19,15,16,20,19,28,28,27,33,27,32,36,36, 48,48,49,55,48,57,64,65,82,79,83,92,83,100,106, 112,134,129] |