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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | -1 |
| 4 | 3 |
| 5 | -3 |
| 6 | 0 |
| 7 | 1 |
| 8 | 4 |
| 9 | -6 |
| 10 | 0 |
| 11 | 4 |
| 12 | 3 |
| 13 | -6 |
| 14 | 2 |
| 15 | 5 |
| 16 | -10 |
| 17 | 0 |
| 18 | 10 |
| 19 | 15 |
| 20 | -18 |
| 21 | -60 |
| 22 | 130 |
| 23 | -105 |
| 24 | 40 |
| 25 | -6 |
| 26 | 6 |
| 27 | -15 |
| 28 | 0 |
| 29 | 20 |
| 30 | 45 |
| 31 | -18 |
| 32 | -330 |
| 33 | 60 |
| 34 | 2445 |
| 35 | -6485 |
| 36 | 8712 |
| 37 | -7260 |
| 38 | 3925 |
| 39 | -1350 |
| 40 | 270 |
| 41 | -24 |
| 42 | 7 |
| 43 | -21 |
| 44 | 0 |
| 45 | 35 |
| 46 | 105 |
| 47 | 42 |
| 48 | -980 |
| 49 | -1950 |
| 50 | 11760 |
| 51 | 12355 |
| 52 | -182721 |
| 53 | 589281 |
| 54 | -1128820 |
| 55 | 1502550 |
| 56 | -1471305 |
[1,2,-1,3,-3,0,1,4,-6,0,4,3,-6,2,5,-10,0,10,15, -18,-60,130,-105,40,-6,6,-15,0,20,45,-18,-330,60, 2445,-6485,8712,-7260,3925,-1350,270,-24,7,-21,0, 35,105,42,-980,-1950,11760,12355,-182721,589281, -1128820,1502550,-1471305] |