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