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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | -1 |
| 5 | -3 |
| 6 | 1 |
| 7 | -1 |
| 8 | -1 |
| 9 | -6 |
| 10 | 1 |
| 11 | -1 |
| 12 | 5 |
| 13 | 5 |
| 14 | -10 |
| 15 | 1 |
| 16 | -1 |
| 17 | 19 |
| 18 | 30 |
| 19 | 25 |
| 20 | -15 |
| 21 | 1 |
| 22 | -1 |
| 23 | 49 |
| 24 | 49 |
| 25 | 70 |
| 26 | 70 |
| 27 | -21 |
| 28 | 1 |
| 29 | -1 |
| 30 | 111 |
| 31 | -70 |
| 32 | -91 |
| 33 | 70 |
| 34 | 154 |
| 35 | -28 |
| 36 | 1 |
| 37 | -1 |
| 38 | 237 |
| 39 | -883 |
| 40 | -1218 |
| 41 | -861 |
| 42 | -126 |
| 43 | 294 |
| 44 | -36 |
| 45 | 1 |
| 46 | -1 |
| 47 | 491 |
| 48 | -4410 |
| 49 | -4495 |
| 50 | -3885 |
| 51 | -2877 |
| 52 | -840 |
| 53 | 510 |
| 54 | -45 |
| 55 | 1 |
[1,-1,1,-1,-3,1,-1,-1,-6,1,-1,5,5,-10,1,-1,19,30, 25,-15,1,-1,49,49,70,70,-21,1,-1,111,-70,-91,70, 154,-28,1,-1,237,-883,-1218,-861,-126,294,-36,1, -1,491,-4410,-4495,-3885,-2877,-840,510,-45,1] |