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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -1 |
| 3 | 0 |
| 4 | -1 |
| 5 | 2 |
| 6 | -1 |
| 7 | -2 |
| 8 | 5 |
| 9 | -4 |
| 10 | 1 |
| 11 | 0 |
| 12 | -7 |
| 13 | 18 |
| 14 | -9 |
| 15 | -12 |
| 16 | 17 |
| 17 | -24 |
| 18 | 31 |
| 19 | 6 |
| 20 | -67 |
| 21 | 94 |
| 22 | -49 |
| 23 | -60 |
| 24 | 157 |
| 25 | -230 |
| 26 | 217 |
| 27 | 118 |
| 28 | -619 |
| 29 | 758 |
| 30 | -461 |
| 31 | -252 |
| 32 | 1509 |
| 33 | -2490 |
| 34 | 1867 |
| 35 | 780 |
| 36 | -4531 |
| 37 | 6932 |
| 38 | -5543 |
| 39 | -820 |
| 40 | 11885 |
| 41 | -21248 |
| 42 | 17591 |
| 43 | 2586 |
| 44 | -32415 |
| 45 | 58070 |
| 46 | -54325 |
| 47 | -56 |
[1,0,-1,0,-1,2,-1,-2,5,-4,1,0,-7,18,-9,-12,17,-24, 31,6,-67,94,-49,-60,157,-230,217,118,-619,758, -461,-252,1509,-2490,1867,780,-4531,6932,-5543, -820,11885,-21248,17591,2586,-32415,58070,-54325, -56] |