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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | -1 |
| 5 | -1 |
| 6 | -1 |
| 7 | 1 |
| 8 | -1 |
| 9 | -1 |
| 10 | 1 |
| 11 | -1 |
| 12 | -1 |
| 13 | -1 |
| 14 | -1 |
| 15 | 1 |
| 16 | -1 |
| 17 | -1 |
| 18 | 1 |
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| 21 | 1 |
| 22 | 1 |
| 23 | -1 |
| 24 | -1 |
| 25 | -1 |
| 26 | 1 |
| 27 | -1 |
| 28 | -1 |
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| 31 | 1 |
| 32 | -1 |
| 33 | -1 |
| 34 | 1 |
| 35 | -1 |
| 36 | 1 |
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| 38 | 1 |
| 39 | -1 |
| 40 | 1 |
| 41 | 1 |
| 42 | -1 |
| 43 | 1 |
| 44 | 1 |
| 45 | 1 |
| 46 | 1 |
| 47 | -1 |
| 48 | -1 |
| 49 | -1 |
| 50 | 1 |
| 51 | -1 |
| 52 | 1 |
| 53 | 1 |
| 54 | 1 |
| 55 | -1 |
| 56 | -1 |
| 57 | -1 |
| 58 | 1 |
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| 60 | -1 |
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| 63 | 1 |
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