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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | -1 |
| 5 | 0 |
| 6 | 1 |
| 7 | -2 |
| 8 | 1 |
| 9 | 0 |
| 10 | 1 |
| 11 | -3 |
| 12 | 3 |
| 13 | -1 |
| 14 | 0 |
| 15 | 1 |
| 16 | -4 |
| 17 | 6 |
| 18 | -4 |
| 19 | 1 |
| 20 | 0 |
| 21 | 1 |
| 22 | -5 |
| 23 | 10 |
| 24 | -10 |
| 25 | 5 |
| 26 | -1 |
| 27 | 0 |
| 28 | 1 |
| 29 | -6 |
| 30 | 15 |
| 31 | -20 |
| 32 | 15 |
| 33 | -6 |
| 34 | 1 |
| 35 | 0 |
| 36 | 1 |
| 37 | -7 |
| 38 | 21 |
| 39 | -35 |
| 40 | 35 |
| 41 | -21 |
| 42 | 7 |
| 43 | -1 |
| 44 | 0 |
| 45 | 1 |
| 46 | -8 |
| 47 | 28 |
| 48 | -56 |
| 49 | 70 |
| 50 | -56 |
| 51 | 28 |
| 52 | -8 |
| 53 | 0 |
| 54 | 0 |
| 55 | 1 |
| 56 | -9 |
| 57 | 36 |
| 58 | -84 |
| 59 | 126 |
| 60 | -126 |
| 61 | 84 |
| 62 | -36 |
| 63 | 7 |
| 64 | 1 |
| 65 | 0 |
| 66 | 1 |
| 67 | -10 |
| 68 | 45 |
| 69 | -120 |
| 70 | 210 |
| 71 | -252 |
| 72 | 210 |
| 73 | -120 |
| 74 | 42 |
| 75 | -4 |
| 76 | -2 |
| 77 | 0 |
[1,1,0,1,-1,0,1,-2,1,0,1,-3,3,-1,0,1,-4,6,-4,1,0, 1,-5,10,-10,5,-1,0,1,-6,15,-20,15,-6,1,0,1,-7,21, -35,35,-21,7,-1,0,1,-8,28,-56,70,-56,28,-8,0,0,1, -9,36,-84,126,-126,84,-36,7,1,0,1,-10,45,-120,210, -252,210,-120,42,-4,-2,0] |