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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | -7 |
| 3 | -7 |
| 4 | 2 |
| 5 | 13 |
| 6 | 13 |
| 7 | -2 |
| 8 | -19 |
| 9 | -19 |
| 10 | 2 |
| 11 | 25 |
| 12 | 25 |
| 13 | -2 |
| 14 | -31 |
| 15 | -31 |
| 16 | 2 |
| 17 | 37 |
| 18 | 37 |
| 19 | -2 |
| 20 | -43 |
| 21 | -43 |
| 22 | 2 |
| 23 | 49 |
| 24 | 49 |
| 25 | -2 |
| 26 | -55 |
| 27 | -55 |
| 28 | 2 |
| 29 | 61 |
| 30 | 61 |
| 31 | -2 |
| 32 | -67 |
| 33 | -67 |
| 34 | 2 |
| 35 | 73 |
| 36 | 73 |
| 37 | -2 |
| 38 | -79 |
| 39 | -79 |
| 40 | 2 |
| 41 | 85 |
| 42 | 85 |
| 43 | -2 |
| 44 | -91 |
| 45 | -91 |
| 46 | 2 |
| 47 | 97 |
| 48 | 97 |
| 49 | -2 |
| 50 | -103 |
| 51 | -103 |
| 52 | 2 |
| 53 | 109 |
| 54 | 109 |
| 55 | -2 |
| 56 | -115 |
| 57 | -115 |
| 58 | 2 |
| 59 | 121 |
| 60 | 121 |
| 61 | -2 |
[1,-2,-7,-7,2,13,13,-2,-19,-19,2,25,25,-2,-31,-31, 2,37,37,-2,-43,-43,2,49,49,-2,-55,-55,2,61,61,-2, -67,-67,2,73,73,-2,-79,-79,2,85,85,-2,-91,-91,2, 97,97,-2,-103,-103,2,109,109,-2,-115,-115,2,121, 121,-2] |