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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 1 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 2 |
| 19 | 2 |
| 20 | 2 |
| 21 | 2 |
| 22 | 2 |
| 23 | 2 |
| 24 | 3 |
| 25 | 3 |
| 26 | 4 |
| 27 | 4 |
| 28 | 4 |
| 29 | 4 |
| 30 | 5 |
| 31 | 5 |
| 32 | 6 |
| 33 | 6 |
| 34 | 7 |
| 35 | 8 |
| 36 | 8 |
| 37 | 8 |
| 38 | 9 |
| 39 | 10 |
| 40 | 12 |
| 41 | 12 |
| 42 | 14 |
| 43 | 14 |
| 44 | 15 |
| 45 | 16 |
| 46 | 17 |
| 47 | 19 |
| 48 | 22 |
| 49 | 22 |
| 50 | 24 |
| 51 | 25 |
| 52 | 27 |
| 53 | 29 |
| 54 | 32 |
| 55 | 34 |
| 56 | 38 |
| 57 | 39 |
| 58 | 42 |
| 59 | 44 |
| 60 | 48 |
| 61 | 51 |
| 62 | 55 |
| 63 | 59 |
| 64 | 64 |
| 65 | 67 |
| 66 | 72 |
| 67 | 75 |
| 68 | 81 |
| 69 | 87 |
| 70 | 94 |
| 71 | 99 |
| 72 | 107 |
| 73 | 111 |
| 74 | 119 |
| 75 | 126 |
| 76 | 135 |
| 77 | 144 |
| 78 | 154 |
[0,0,0,0,1,1,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,3, 3,4,4,4,4,5,5,6,6,7,8,8,8,9,10,12,12,14,14,15,16, 17,19,22,22,24,25,27,29,32,34,38,39,42,44,48,51, 55,59,64,67,72,75,81,87,94,99,107,111,119,126,135, 144,154] |