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