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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 4 |
| 3 | -3 |
| 4 | 5 |
| 5 | -8 |
| 6 | 10 |
| 7 | -7 |
| 8 | 9 |
| 9 | -14 |
| 10 | 16 |
| 11 | -11 |
| 12 | 13 |
| 13 | -20 |
| 14 | 22 |
| 15 | -15 |
| 16 | 17 |
| 17 | -26 |
| 18 | 28 |
| 19 | -19 |
| 20 | 21 |
| 21 | -32 |
| 22 | 34 |
| 23 | -23 |
| 24 | 25 |
| 25 | -38 |
| 26 | 40 |
| 27 | -27 |
| 28 | 29 |
| 29 | -44 |
| 30 | 46 |
| 31 | -31 |
| 32 | 33 |
| 33 | -50 |
| 34 | 52 |
| 35 | -35 |
| 36 | 37 |
| 37 | -56 |
| 38 | 58 |
| 39 | -39 |
| 40 | 41 |
| 41 | -62 |
| 42 | 64 |
| 43 | -43 |
| 44 | 45 |
| 45 | -68 |
| 46 | 70 |
| 47 | -47 |
| 48 | 49 |
| 49 | -74 |
| 50 | 76 |
| 51 | -51 |
| 52 | 53 |
| 53 | -80 |
| 54 | 82 |
| 55 | -55 |
| 56 | 57 |
| 57 | -86 |
| 58 | 88 |
| 59 | -59 |
[1,-2,4,-3,5,-8,10,-7,9,-14,16,-11,13,-20,22,-15, 17,-26,28,-19,21,-32,34,-23,25,-38,40,-27,29,-44, 46,-31,33,-50,52,-35,37,-56,58,-39,41,-62,64,-43, 45,-68,70,-47,49,-74,76,-51,53,-80,82,-55,57,-86, 88,-59] |