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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | -1 |
| 4 | 1 |
| 5 | -1 |
| 6 | 1 |
| 7 | -1 |
| 8 | 1 |
| 9 | 0 |
| 10 | -1 |
| 11 | 2 |
| 12 | -3 |
| 13 | 4 |
| 14 | -5 |
| 15 | 6 |
| 16 | -7 |
| 17 | 7 |
| 18 | -6 |
| 19 | 4 |
| 20 | -1 |
| 21 | -3 |
| 22 | 8 |
| 23 | -14 |
| 24 | 21 |
| 25 | -28 |
| 26 | 34 |
| 27 | -38 |
| 28 | 39 |
| 29 | -36 |
| 30 | 28 |
| 31 | -14 |
| 32 | -7 |
| 33 | 35 |
| 34 | -69 |
| 35 | 107 |
| 36 | -147 |
| 37 | 184 |
| 38 | -213 |
| 39 | 228 |
| 40 | -222 |
| 41 | 188 |
| 42 | -120 |
| 43 | 14 |
| 44 | 133 |
| 45 | -318 |
| 46 | 533 |
| 47 | -764 |
| 48 | 990 |
| 49 | -1183 |
| 50 | 1309 |
| 51 | -1330 |
| 52 | 1204 |
| 53 | -892 |
| 54 | 363 |
| 55 | 400 |
| 56 | -1393 |
| 57 | 2584 |
[1,-1,1,-1,1,-1,1,-1,1,0,-1,2,-3,4,-5,6,-7,7,-6,4, -1,-3,8,-14,21,-28,34,-38,39,-36,28,-14,-7,35,-69, 107,-147,184,-213,228,-222,188,-120,14,133,-318, 533,-764,990,-1183,1309,-1330,1204,-892,363,400, -1393,2584] |