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