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