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