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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | -2 |
| 4 | 0 |
| 5 | 3 |
| 6 | 0 |
| 7 | -6 |
| 8 | 0 |
| 9 | 4 |
| 10 | 3 |
| 11 | 0 |
| 12 | -12 |
| 13 | 0 |
| 14 | 5 |
| 15 | 0 |
| 16 | 12 |
| 17 | 0 |
| 18 | -20 |
| 19 | 0 |
| 20 | 6 |
| 21 | -4 |
| 22 | 0 |
| 23 | 30 |
| 24 | 0 |
| 25 | -30 |
| 26 | 0 |
| 27 | 7 |
| 28 | 0 |
| 29 | -20 |
| 30 | 0 |
| 31 | 60 |
| 32 | 0 |
| 33 | -42 |
| 34 | 0 |
| 35 | 8 |
| 36 | 5 |
| 37 | 0 |
| 38 | -60 |
| 39 | 0 |
| 40 | 105 |
| 41 | 0 |
| 42 | -56 |
| 43 | 0 |
| 44 | 9 |
| 45 | 0 |
| 46 | 30 |
| 47 | 0 |
| 48 | -140 |
| 49 | 0 |
| 50 | 168 |
| 51 | 0 |
| 52 | -72 |
| 53 | 0 |
| 54 | 10 |
| 55 | -6 |
| 56 | 0 |
| 57 | 105 |
| 58 | 0 |
| 59 | -280 |
| 60 | 0 |
| 61 | 252 |
| 62 | 0 |
| 63 | -90 |
| 64 | 0 |
| 65 | 11 |
| 66 | 0 |
| 67 | -42 |
| 68 | 0 |
| 69 | 280 |
| 70 | 0 |
| 71 | -504 |
| 72 | 0 |
| 73 | 360 |
| 74 | 0 |
| 75 | -110 |
| 76 | 0 |
| 77 | 12 |
| 78 | 7 |
| 79 | 0 |
| 80 | -168 |
| 81 | 0 |
| 82 | 630 |
| 83 | 0 |
| 84 | -840 |
| 85 | 0 |
| 86 | 495 |
| 87 | 0 |
| 88 | -132 |
| 89 | 0 |
| 90 | 13 |
[1,0,2,-2,0,3,0,-6,0,4,3,0,-12,0,5,0,12,0,-20,0,6, -4,0,30,0,-30,0,7,0,-20,0,60,0,-42,0,8,5,0,-60,0, 105,0,-56,0,9,0,30,0,-140,0,168,0,-72,0,10,-6,0, 105,0,-280,0,252,0,-90,0,11,0,-42,0,280,0,-504,0, 360,0,-110,0,12,7,0,-168,0,630,0,-840,0,495,0, -132,0,13] |