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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | -1 |
| 5 | -1 |
| 6 | 1 |
| 7 | 0 |
| 8 | -1 |
| 9 | -1 |
| 10 | 1 |
| 11 | 3 |
| 12 | 1 |
| 13 | -1 |
| 14 | -1 |
| 15 | 1 |
| 16 | 10 |
| 17 | 8 |
| 18 | 2 |
| 19 | -1 |
| 20 | -1 |
| 21 | 1 |
| 22 | 25 |
| 23 | 26 |
| 24 | 14 |
| 25 | 3 |
| 26 | -1 |
| 27 | -1 |
| 28 | 1 |
| 29 | 56 |
| 30 | 67 |
| 31 | 48 |
| 32 | 21 |
| 33 | 4 |
| 34 | -1 |
| 35 | -1 |
| 36 | 1 |
| 37 | 119 |
| 38 | 155 |
| 39 | 131 |
| 40 | 77 |
| 41 | 29 |
| 42 | 5 |
| 43 | -1 |
| 44 | -1 |
| 45 | 1 |
| 46 | 246 |
| 47 | 338 |
| 48 | 318 |
| 49 | 224 |
| 50 | 114 |
| 51 | 38 |
| 52 | 6 |
| 53 | -1 |
| 54 | -1 |
| 55 | 1 |
| 56 | 501 |
| 57 | 712 |
| 58 | 720 |
| 59 | 574 |
| 60 | 354 |
| 61 | 160 |
| 62 | 48 |
| 63 | 7 |
| 64 | -1 |
| 65 | -1 |
[1,1,-1,1,-1,-1,1,0,-1,-1,1,3,1,-1,-1,1,10,8,2,-1, -1,1,25,26,14,3,-1,-1,1,56,67,48,21,4,-1,-1,1,119, 155,131,77,29,5,-1,-1,1,246,338,318,224,114,38,6, -1,-1,1,501,712,720,574,354,160,48,7,-1,-1] |