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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | 0 |
| 1 | 0 |
| 2 | -2 |
| 3 | 2 |
| 4 | -2 |
| 5 | 3 |
| 6 | -2 |
| 7 | 5 |
| 8 | -6 |
| 9 | 5 |
| 10 | -6 |
| 11 | 9 |
| 12 | -10 |
| 13 | 10 |
| 14 | -16 |
| 15 | 17 |
| 16 | -18 |
| 17 | 25 |
| 18 | -26 |
| 19 | 31 |
| 20 | -38 |
| 21 | 37 |
| 22 | -48 |
| 23 | 60 |
| 24 | -62 |
| 25 | 68 |
| 26 | -84 |
| 27 | 95 |
| 28 | -104 |
| 29 | 125 |
| 30 | -134 |
| 31 | 154 |
| 32 | -182 |
| 33 | 192 |
| 34 | -220 |
| 35 | 257 |
| 36 | -274 |
| 37 | 309 |
| 38 | -360 |
| 39 | 394 |
| 40 | -434 |
| 41 | 492 |
| 42 | -544 |
| 43 | 607 |
| 44 | -688 |
| 45 | 740 |
| 46 | -824 |
| 47 | 944 |
| 48 | -1018 |
| 49 | 1123 |
| 50 | -1266 |
| 51 | 1377 |
| 52 | -1524 |
| 53 | 1697 |
| 54 | -1850 |
| 55 | 2041 |
| 56 | -2264 |
| 57 | 2461 |
| 58 | -2708 |
[1,0,0,-2,2,-2,3,-2,5,-6,5,-6,9,-10,10,-16,17,-18, 25,-26,31,-38,37,-48,60,-62,68,-84,95,-104,125, -134,154,-182,192,-220,257,-274,309,-360,394,-434, 492,-544,607,-688,740,-824,944,-1018,1123,-1266, 1377,-1524,1697,-1850,2041,-2264,2461,-2708] |