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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 2 |
| 4 | 0 |
| 5 | 4 |
| 6 | -2 |
| 7 | 6 |
| 8 | 0 |
| 9 | 6 |
| 10 | -4 |
| 11 | 10 |
| 12 | 0 |
| 13 | 12 |
| 14 | -6 |
| 15 | 8 |
| 16 | 0 |
| 17 | 16 |
| 18 | -6 |
| 19 | 18 |
| 20 | 0 |
| 21 | 12 |
| 22 | -10 |
| 23 | 22 |
| 24 | 0 |
| 25 | 20 |
| 26 | -12 |
| 27 | 18 |
| 28 | 0 |
| 29 | 28 |
| 30 | -8 |
| 31 | 30 |
| 32 | 0 |
| 33 | 20 |
| 34 | -16 |
| 35 | 24 |
| 36 | 0 |
| 37 | 36 |
| 38 | -18 |
| 39 | 24 |
| 40 | 0 |
| 41 | 40 |
| 42 | -12 |
| 43 | 42 |
| 44 | 0 |
| 45 | 24 |
| 46 | -22 |
| 47 | 46 |
| 48 | 0 |
| 49 | 42 |
| 50 | -20 |
| 51 | 32 |
| 52 | 0 |
| 53 | 52 |
| 54 | -18 |
| 55 | 40 |
| 56 | 0 |
| 57 | 36 |
| 58 | -28 |
| 59 | 58 |
| 60 | 0 |
| 61 | 60 |
| 62 | -30 |
| 63 | 36 |
| 64 | 0 |
| 65 | 48 |
| 66 | -20 |
| 67 | 66 |
| 68 | 0 |
| 69 | 44 |
| 70 | -24 |
| 71 | 70 |
| 72 | 0 |
| 73 | 72 |
| 74 | -36 |
| 75 | 40 |
| 76 | 0 |
| 77 | 60 |
| 78 | -24 |
| 79 | 78 |
| 80 | 0 |
| 81 | 54 |
| 82 | -40 |
| 83 | 82 |
| 84 | 0 |
| 85 | 64 |
| 86 | -42 |
| 87 | 56 |
| 88 | 0 |
| 89 | 88 |
[1,-1,2,0,4,-2,6,0,6,-4,10,0,12,-6,8,0,16,-6,18,0, 12,-10,22,0,20,-12,18,0,28,-8,30,0,20,-16,24,0,36, -18,24,0,40,-12,42,0,24,-22,46,0,42,-20,32,0,52, -18,40,0,36,-28,58,0,60,-30,36,0,48,-20,66,0,44, -24,70,0,72,-36,40,0,60,-24,78,0,54,-40,82,0,64, -42,56,0,88] |