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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 0 |
| 7 | 1 |
| 8 | -2 |
| 9 | 3 |
| 10 | 0 |
| 11 | 1 |
| 12 | -2 |
| 13 | -3 |
| 14 | 4 |
| 15 | 0 |
| 16 | 1 |
| 17 | -2 |
| 18 | -3 |
| 19 | 4 |
| 20 | 5 |
| 21 | 0 |
| 22 | 1 |
| 23 | -2 |
| 24 | 3 |
| 25 | 4 |
| 26 | -5 |
| 27 | 6 |
| 28 | 0 |
| 29 | 1 |
| 30 | 2 |
| 31 | -3 |
| 32 | 4 |
| 33 | -5 |
| 34 | -6 |
| 35 | 7 |
| 36 | 0 |
| 37 | 1 |
| 38 | -2 |
| 39 | -3 |
| 40 | 4 |
| 41 | -5 |
| 42 | -6 |
| 43 | -7 |
| 44 | 8 |
| 45 | 0 |
| 46 | 1 |
| 47 | -2 |
| 48 | -3 |
| 49 | 4 |
| 50 | -5 |
| 51 | -6 |
| 52 | 7 |
| 53 | -8 |
| 54 | 9 |
| 55 | 0 |
| 56 | 1 |
| 57 | -2 |
| 58 | -3 |
| 59 | 4 |
| 60 | 5 |
| 61 | 6 |
| 62 | -7 |
| 63 | -8 |
| 64 | 9 |
| 65 | 10 |
| 66 | 0 |
| 67 | 1 |
| 68 | -2 |
| 69 | 3 |
| 70 | 4 |
| 71 | 5 |
| 72 | -6 |
| 73 | -7 |
| 74 | -8 |
| 75 | 9 |
| 76 | -10 |
| 77 | 11 |
| 78 | 0 |
| 79 | 1 |
| 80 | -2 |
| 81 | -3 |
| 82 | 4 |
| 83 | -5 |
| 84 | -6 |
| 85 | -7 |
| 86 | -8 |
| 87 | 9 |
| 88 | -10 |
| 89 | -11 |
| 90 | 12 |
[0,0,1,0,1,2,0,1,-2,3,0,1,-2,-3,4,0,1,-2,-3,4,5,0, 1,-2,3,4,-5,6,0,1,2,-3,4,-5,-6,7,0,1,-2,-3,4,-5, -6,-7,8,0,1,-2,-3,4,-5,-6,7,-8,9,0,1,-2,-3,4,5,6, -7,-8,9,10,0,1,-2,3,4,5,-6,-7,-8,9,-10,11,0,1,-2, -3,4,-5,-6,-7,-8,9,-10,-11,12] |