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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | -1 |
| 4 | -1 |
| 5 | 0 |
| 6 | 2 |
| 7 | 2 |
| 8 | 0 |
| 9 | -3 |
| 10 | -4 |
| 11 | 0 |
| 12 | 5 |
| 13 | 6 |
| 14 | 0 |
| 15 | -8 |
| 16 | -9 |
| 17 | 0 |
| 18 | 12 |
| 19 | 14 |
| 20 | 0 |
| 21 | -18 |
| 22 | -20 |
| 23 | 0 |
| 24 | 26 |
| 25 | 29 |
| 26 | 0 |
| 27 | -37 |
| 28 | -42 |
| 29 | 0 |
| 30 | 52 |
| 31 | 58 |
| 32 | 0 |
| 33 | -72 |
| 34 | -80 |
| 35 | 0 |
| 36 | 99 |
| 37 | 110 |
| 38 | 0 |
| 39 | -134 |
| 40 | -148 |
| 41 | 0 |
| 42 | 180 |
| 43 | 198 |
| 44 | 0 |
| 45 | -240 |
| 46 | -264 |
| 47 | 0 |
| 48 | 317 |
| 49 | 347 |
| 50 | 0 |
| 51 | -416 |
| 52 | -454 |
| 53 | 0 |
| 54 | 542 |
| 55 | 592 |
| 56 | 0 |
| 57 | -702 |
| 58 | -764 |
| 59 | 0 |
| 60 | 904 |
| 61 | 982 |
| 62 | 0 |
| 63 | -1158 |
[1,0,-1,-1,0,2,2,0,-3,-4,0,5,6,0,-8,-9,0,12,14,0, -18,-20,0,26,29,0,-37,-42,0,52,58,0,-72,-80,0,99, 110,0,-134,-148,0,180,198,0,-240,-264,0,317,347,0, -416,-454,0,542,592,0,-702,-764,0,904,982,0,-1158] |