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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | -1 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | -1 |
| 7 | 0 |
| 8 | 4 |
| 9 | 0 |
| 10 | -1 |
| 11 | 0 |
| 12 | 8 |
| 13 | 0 |
| 14 | -1 |
| 15 | 0 |
| 16 | 16 |
| 17 | 0 |
| 18 | 3 |
| 19 | 0 |
| 20 | 16 |
| 21 | 0 |
| 22 | -1 |
| 23 | 0 |
| 24 | 36 |
| 25 | 0 |
| 26 | -1 |
| 27 | 0 |
| 28 | 24 |
| 29 | 0 |
| 30 | 15 |
| 31 | 0 |
| 32 | 48 |
| 33 | 0 |
| 34 | -1 |
| 35 | 0 |
| 36 | 48 |
| 37 | 0 |
| 38 | -1 |
| 39 | 0 |
| 40 | 68 |
| 41 | 0 |
| 42 | 23 |
| 43 | 0 |
| 44 | 40 |
| 45 | 0 |
| 46 | -1 |
| 47 | 0 |
| 48 | 112 |
| 49 | 0 |
| 50 | 15 |
| 51 | 0 |
| 52 | 48 |
| 53 | 0 |
| 54 | 27 |
| 55 | 0 |
| 56 | 100 |
| 57 | 0 |
| 58 | -1 |
| 59 | 0 |
| 60 | 120 |
| 61 | 0 |
| 62 | -1 |
| 63 | 0 |
| 64 | 128 |
| 65 | 0 |
| 66 | 39 |
| 67 | 0 |
| 68 | 64 |
| 69 | 0 |
| 70 | 47 |
| 71 | 0 |
| 72 | 180 |
| 73 | 0 |
| 74 | -1 |
| 75 | 0 |
| 76 | 72 |
| 77 | 0 |
| 78 | 47 |
| 79 | 0 |
| 80 | 208 |
| 81 | 0 |
| 82 | -1 |
| 83 | 0 |
| 84 | 176 |
| 85 | 0 |
| 86 | -1 |
| 87 | 0 |
| 88 | 164 |
| 89 | 0 |
| 90 | 99 |
[0,-1,0,0,0,-1,0,4,0,-1,0,8,0,-1,0,16,0,3,0,16,0, -1,0,36,0,-1,0,24,0,15,0,48,0,-1,0,48,0,-1,0,68,0, 23,0,40,0,-1,0,112,0,15,0,48,0,27,0,100,0,-1,0, 120,0,-1,0,128,0,39,0,64,0,47,0,180,0,-1,0,72,0, 47,0,208,0,-1,0,176,0,-1,0,164,0,99] |