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