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