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