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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 3 |
| 7 | 0 |
| 8 | 1 |
| 9 | 3 |
| 10 | 9 |
| 11 | 0 |
| 12 | 1 |
| 13 | 4 |
| 14 | 14 |
| 15 | 16 |
| 16 | 0 |
| 17 | 1 |
| 18 | 3 |
| 19 | 8 |
| 20 | 12 |
| 21 | 18 |
| 22 | -1 |
| 23 | -1 |
| 24 | -1 |
| 25 | -1 |
| 26 | -1 |
| 27 | -1 |
| 28 | -1 |
| 29 | 0 |
| 30 | 1 |
| 31 | 3 |
| 32 | 13 |
| 33 | 32 |
| 34 | 36 |
| 35 | 43 |
| 36 | 52 |
| 37 | 0 |
| 38 | 1 |
| 39 | 3 |
| 40 | 7 |
| 41 | 15 |
| 42 | 31 |
| 43 | 36 |
| 44 | 54 |
| 45 | 63 |
| 46 | 0 |
| 47 | 1 |
| 48 | 3 |
| 49 | 9 |
| 50 | 27 |
| 51 | 49 |
| 52 | 56 |
| 53 | 61 |
| 54 | 77 |
| 55 | 81 |
| 56 | -1 |
| 57 | -1 |
| 58 | -1 |
| 59 | -1 |
| 60 | -1 |
| 61 | -1 |
| 62 | -1 |
| 63 | -1 |
| 64 | -1 |
| 65 | -1 |
| 66 | -1 |
| 67 | 0 |
| 68 | 1 |
| 69 | 3 |
| 70 | 12 |
| 71 | 20 |
| 72 | 34 |
| 73 | 38 |
| 74 | 81 |
| 75 | 88 |
| 76 | 94 |
| 77 | 104 |
| 78 | 109 |
[0,0,1,0,1,3,0,1,3,9,0,1,4,14,16,0,1,3,8,12,18,-1, -1,-1,-1,-1,-1,-1,0,1,3,13,32,36,43,52,0,1,3,7,15, 31,36,54,63,0,1,3,9,27,49,56,61,77,81,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,0,1,3,12,20,34,38,81,88,94, 104,109] |