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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | -1 |
| 8 | 1 |
| 9 | -1 |
| 10 | 0 |
| 11 | 1 |
| 12 | -2 |
| 13 | 2 |
| 14 | -2 |
| 15 | 2 |
| 16 | 0 |
| 17 | -2 |
| 18 | 3 |
| 19 | -4 |
| 20 | 4 |
| 21 | -2 |
| 22 | 0 |
| 23 | 2 |
| 24 | -5 |
| 25 | 7 |
| 26 | -6 |
| 27 | 3 |
| 28 | 0 |
| 29 | -4 |
| 30 | 8 |
| 31 | -10 |
| 32 | 9 |
| 33 | -6 |
| 34 | 0 |
| 35 | 8 |
| 36 | -12 |
| 37 | 14 |
| 38 | -14 |
| 39 | 9 |
| 40 | 0 |
| 41 | -10 |
| 42 | 18 |
| 43 | -22 |
| 44 | 20 |
| 45 | -12 |
| 46 | 0 |
| 47 | 13 |
| 48 | -26 |
| 49 | 33 |
| 50 | -29 |
| 51 | 17 |
| 52 | 0 |
| 53 | -20 |
| 54 | 37 |
| 55 | -45 |
| 56 | 42 |
| 57 | -26 |
| 58 | 0 |
| 59 | 29 |
| 60 | -52 |
| 61 | 62 |
| 62 | -58 |
| 63 | 37 |
| 64 | 0 |
| 65 | -40 |
| 66 | 72 |
| 67 | -88 |
| 68 | 80 |
| 69 | -48 |
| 70 | 0 |
| 71 | 53 |
| 72 | -99 |
| 73 | 122 |
| 74 | -110 |
| 75 | 65 |
| 76 | 0 |
| 77 | -72 |
| 78 | 134 |
| 79 | -163 |
| 80 | 148 |
| 81 | -91 |
| 82 | 0 |
[1,-1,0,0,0,1,-1,1,-1,0,1,-2,2,-2,2,0,-2,3,-4,4, -2,0,2,-5,7,-6,3,0,-4,8,-10,9,-6,0,8,-12,14,-14,9, 0,-10,18,-22,20,-12,0,13,-26,33,-29,17,0,-20,37, -45,42,-26,0,29,-52,62,-58,37,0,-40,72,-88,80,-48, 0,53,-99,122,-110,65,0,-72,134,-163,148,-91,0] |