The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -3 |
| 2 | 0 |
| 3 | 6 |
| 4 | -3 |
| 5 | 0 |
| 6 | 1 |
| 7 | -9 |
| 8 | 0 |
| 9 | 12 |
| 10 | -3 |
| 11 | 0 |
| 12 | 6 |
| 13 | -12 |
| 14 | 0 |
| 15 | 6 |
| 16 | -3 |
| 17 | 0 |
| 18 | 7 |
| 19 | -15 |
| 20 | 0 |
| 21 | 18 |
| 22 | -6 |
| 23 | 0 |
| 24 | 0 |
| 25 | -15 |
| 26 | 0 |
| 27 | 24 |
| 28 | -6 |
| 29 | 0 |
| 30 | 6 |
| 31 | -15 |
| 32 | 0 |
| 33 | 6 |
| 34 | -9 |
| 35 | 0 |
| 36 | 7 |
| 37 | -21 |
| 38 | 0 |
| 39 | 30 |
| 40 | -3 |
| 41 | 0 |
| 42 | 6 |
| 43 | -21 |
| 44 | 0 |
| 45 | 24 |
| 46 | -6 |
| 47 | 0 |
| 48 | 12 |
| 49 | -27 |
| 50 | 0 |
| 51 | 0 |
| 52 | -9 |
| 53 | 0 |
| 54 | 12 |
| 55 | -21 |
| 56 | 0 |
| 57 | 36 |
| 58 | -6 |
| 59 | 0 |
| 60 | 1 |
| 61 | -18 |
| 62 | 0 |
| 63 | 36 |
| 64 | -12 |
| 65 | 0 |
| 66 | 6 |
| 67 | -33 |
| 68 | 0 |
| 69 | 18 |
| 70 | -9 |
| 71 | 0 |
[1,-3,0,6,-3,0,1,-9,0,12,-3,0,6,-12,0,6,-3,0,7, -15,0,18,-6,0,0,-15,0,24,-6,0,6,-15,0,6,-9,0,7, -21,0,30,-3,0,6,-21,0,24,-6,0,12,-27,0,0,-9,0,12, -21,0,36,-6,0,1,-18,0,36,-12,0,6,-33,0,18,-9,0] |