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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | -1 |
| 4 | 0 |
| 5 | -1 |
| 6 | 1 |
| 7 | 0 |
| 8 | 1 |
| 9 | -1 |
| 10 | 1 |
| 11 | -2 |
| 12 | 1 |
| 13 | -2 |
| 14 | 3 |
| 15 | -2 |
| 16 | 4 |
| 17 | -4 |
| 18 | 3 |
| 19 | -6 |
| 20 | 6 |
| 21 | -6 |
| 22 | 9 |
| 23 | -8 |
| 24 | 10 |
| 25 | -14 |
| 26 | 13 |
| 27 | -17 |
| 28 | 20 |
| 29 | -20 |
| 30 | 28 |
| 31 | -30 |
| 32 | 32 |
| 33 | -43 |
| 34 | 44 |
| 35 | -52 |
| 36 | 66 |
| 37 | -67 |
| 38 | 83 |
| 39 | -99 |
| 40 | 105 |
| 41 | -132 |
| 42 | 149 |
| 43 | -165 |
| 44 | 205 |
| 45 | -226 |
| 46 | 261 |
| 47 | -315 |
| 48 | 345 |
| 49 | -410 |
| 50 | 482 |
| 51 | -534 |
| 52 | 640 |
| 53 | -735 |
| 54 | 831 |
| 55 | -994 |
| 56 | 1126 |
| 57 | -1295 |
| 58 | 1532 |
| 59 | -1731 |
| 60 | 2019 |
| 61 | -2357 |
| 62 | 2671 |
| 63 | -3135 |
| 64 | 3622 |
| 65 | -4138 |
| 66 | 4857 |
[1,0,0,-1,0,-1,1,0,1,-1,1,-2,1,-2,3,-2,4,-4,3,-6, 6,-6,9,-8,10,-14,13,-17,20,-20,28,-30,32,-43,44, -52,66,-67,83,-99,105,-132,149,-165,205,-226,261, -315,345,-410,482,-534,640,-735,831,-994,1126, -1295,1532,-1731,2019,-2357,2671,-3135,3622,-4138, 4857] |