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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 15 |
| 17 | 0 |
| 18 | -15 |
| 19 | -30 |
| 20 | -45 |
| 21 | -60 |
| 22 | -75 |
| 23 | -90 |
| 24 | -105 |
| 25 | -120 |
| 26 | -135 |
| 27 | -150 |
| 28 | -165 |
| 29 | -180 |
| 30 | -195 |
| 31 | -210 |
| 32 | 30 |
| 33 | 15 |
| 34 | 0 |
| 35 | -15 |
| 36 | -30 |
| 37 | -45 |
| 38 | -60 |
| 39 | -75 |
| 40 | -90 |
| 41 | -105 |
| 42 | -120 |
| 43 | -135 |
| 44 | -150 |
| 45 | -165 |
| 46 | -180 |
| 47 | -195 |
| 48 | 45 |
| 49 | 30 |
| 50 | 15 |
| 51 | 0 |
| 52 | -15 |
| 53 | -30 |
| 54 | -45 |
| 55 | -60 |
| 56 | -75 |
| 57 | -90 |
| 58 | -105 |
| 59 | -120 |
| 60 | -135 |
| 61 | -150 |
| 62 | -165 |
| 63 | -180 |
| 64 | 60 |
| 65 | 45 |
| 66 | 30 |
| 67 | 15 |
| 68 | 0 |
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