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A124841 as a simple table

n a(n)
0 1
1 -1
2 2
3 -3
4 3
5 0
6 -10
7 35
8 -90
9 200
10 -400
11 726
12 -1188
13 1716
14 -2080
15 1820
16 -312
17 -2704
18 5408
19 455
20 -39195
21 170313
22 -523029
23 1352078
24 -3114774
25 6548074
26 -12668578
27 22492886
28 -36020998
29 49549110
30 -49549110
31 0
32 182029056
33 -670853984
34 1809734560
35 -4242470755

[1,-1,2,-3,3,0,-10,35,-90,200,-400,726,-1188,1716,
 -2080,1820,-312,-2704,5408,455,-39195,170313,
 -523029,1352078,-3114774,6548074,-12668578,
 22492886,-36020998,49549110,-49549110,0,182029056,
 -670853984,1809734560,-4242470755]

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Last modified July 26 01:46 EDT 2021. Contains 346294 sequences. (Running on oeis4.)