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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | -1 |
| 4 | 1 |
| 5 | -1 |
| 6 | 1 |
| 7 | 0 |
| 8 | 1 |
| 9 | -1 |
| 10 | 1 |
| 11 | -1 |
| 12 | 2 |
| 13 | -2 |
| 14 | 1 |
| 15 | -3 |
| 16 | 2 |
| 17 | -2 |
| 18 | 3 |
| 19 | -3 |
| 20 | 4 |
| 21 | -4 |
| 22 | 3 |
| 23 | -4 |
| 24 | 6 |
| 25 | -5 |
| 26 | 5 |
| 27 | -7 |
| 28 | 7 |
| 29 | -7 |
| 30 | 9 |
| 31 | -8 |
| 32 | 9 |
| 33 | -11 |
| 34 | 10 |
| 35 | -12 |
| 36 | 14 |
| 37 | -13 |
| 38 | 14 |
| 39 | -17 |
| 40 | 18 |
| 41 | -18 |
| 42 | 20 |
| 43 | -21 |
| 44 | 23 |
| 45 | -27 |
| 46 | 25 |
| 47 | -27 |
| 48 | 33 |
| 49 | -32 |
| 50 | 34 |
| 51 | -39 |
| 52 | 39 |
| 53 | -42 |
| 54 | 46 |
| 55 | -48 |
| 56 | 51 |
| 57 | -56 |
| 58 | 57 |
| 59 | -61 |
| 60 | 71 |
| 61 | -69 |
| 62 | 72 |
| 63 | -83 |
| 64 | 85 |
| 65 | -90 |
| 66 | 97 |
| 67 | -99 |
| 68 | 108 |
| 69 | -117 |
| 70 | 119 |
| 71 | -126 |
| 72 | 140 |
| 73 | -143 |
| 74 | 149 |
| 75 | -167 |
| 76 | 170 |
[1,0,0,-1,1,-1,1,0,1,-1,1,-1,2,-2,1,-3,2,-2,3,-3, 4,-4,3,-4,6,-5,5,-7,7,-7,9,-8,9,-11,10,-12,14,-13, 14,-17,18,-18,20,-21,23,-27,25,-27,33,-32,34,-39, 39,-42,46,-48,51,-56,57,-61,71,-69,72,-83,85,-90, 97,-99,108,-117,119,-126,140,-143,149,-167,170] |