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| n | a(n) |
|---|---|
| 1 | -1 |
| 2 | -1 |
| 3 | 1 |
| 4 | -1 |
| 5 | 2 |
| 6 | -1 |
| 7 | -1 |
| 8 | 3 |
| 9 | -3 |
| 10 | 1 |
| 11 | -1 |
| 12 | 4 |
| 13 | -6 |
| 14 | 4 |
| 15 | -1 |
| 16 | -1 |
| 17 | 5 |
| 18 | -10 |
| 19 | 10 |
| 20 | -5 |
| 21 | 1 |
| 22 | -1 |
| 23 | 7 |
| 24 | -15 |
| 25 | 20 |
| 26 | -15 |
| 27 | 6 |
| 28 | -1 |
| 29 | -1 |
| 30 | 9 |
| 31 | -23 |
| 32 | 35 |
| 33 | -35 |
| 34 | 21 |
| 35 | -7 |
| 36 | 1 |
| 37 | -1 |
| 38 | 11 |
| 39 | -34 |
| 40 | 59 |
| 41 | -70 |
| 42 | 56 |
| 43 | -28 |
| 44 | 8 |
| 45 | -1 |
| 46 | -1 |
| 47 | 13 |
| 48 | -48 |
| 49 | 96 |
| 50 | -130 |
| 51 | 126 |
| 52 | -84 |
| 53 | 36 |
| 54 | -9 |
| 55 | 1 |
| 56 | -1 |
| 57 | 15 |
| 58 | -65 |
| 59 | 150 |
| 60 | -230 |
| 61 | 257 |
| 62 | -210 |
| 63 | 120 |
| 64 | -45 |
| 65 | 10 |
| 66 | -1 |
[-1,-1,1,-1,2,-1,-1,3,-3,1,-1,4,-6,4,-1,-1,5,-10, 10,-5,1,-1,7,-15,20,-15,6,-1,-1,9,-23,35,-35,21, -7,1,-1,11,-34,59,-70,56,-28,8,-1,-1,13,-48,96, -130,126,-84,36,-9,1,-1,15,-65,150,-230,257,-210, 120,-45,10,-1] |