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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 0 |
| 3 | -1 |
| 4 | 2 |
| 5 | -2 |
| 6 | 2 |
| 7 | -2 |
| 8 | 2 |
| 9 | -3 |
| 10 | 4 |
| 11 | -3 |
| 12 | 3 |
| 13 | -5 |
| 14 | 5 |
| 15 | -5 |
| 16 | 7 |
| 17 | -7 |
| 18 | 7 |
| 19 | -9 |
| 20 | 10 |
| 21 | -11 |
| 22 | 12 |
| 23 | -12 |
| 24 | 13 |
| 25 | -16 |
| 26 | 18 |
| 27 | -17 |
| 28 | 18 |
| 29 | -21 |
| 30 | 23 |
| 31 | -25 |
| 32 | 26 |
| 33 | -27 |
| 34 | 29 |
| 35 | -32 |
| 36 | 35 |
| 37 | -36 |
| 38 | 37 |
| 39 | -40 |
| 40 | 43 |
| 41 | -46 |
| 42 | 50 |
| 43 | -51 |
| 44 | 52 |
| 45 | -58 |
| 46 | 63 |
| 47 | -64 |
| 48 | 67 |
| 49 | -71 |
| 50 | 73 |
| 51 | -79 |
| 52 | 85 |
| 53 | -85 |
| 54 | 88 |
| 55 | -96 |
| 56 | 100 |
| 57 | -104 |
| 58 | 111 |
| 59 | -113 |
| 60 | 117 |
[1,-1,0,-1,2,-2,2,-2,2,-3,4,-3,3,-5,5,-5,7,-7,7, -9,10,-11,12,-12,13,-16,18,-17,18,-21,23,-25,26, -27,29,-32,35,-36,37,-40,43,-46,50,-51,52,-58,63, -64,67,-71,73,-79,85,-85,88,-96,100,-104,111,-113, 117] |