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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | -1 |
| 4 | -3 |
| 5 | -1 |
| 6 | 1 |
| 7 | -7 |
| 8 | 3 |
| 9 | 3 |
| 10 | -1 |
| 11 | 17 |
| 12 | 12 |
| 13 | -9 |
| 14 | -4 |
| 15 | 1 |
| 16 | 43 |
| 17 | -8 |
| 18 | -41 |
| 19 | 6 |
| 20 | 8 |
| 21 | -1 |
| 22 | -109 |
| 23 | -96 |
| 24 | 91 |
| 25 | 72 |
| 26 | -20 |
| 27 | -12 |
[1,1,-1,-3,-1,1,-7,3,3,-1,17,12,-9,-4,1,43,-8,-41, 6,8,-1,-109,-96,91,72,-20,-12] |