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A091138 as a simple table

na(n)
11
22
33
46
515
60
7315
81890
9-82215
10708750
1141008275
12-1385549550
13-33403344975
143426898600125
1526529571443375
16-13516476003780750
17157765729690193625
1884230651703487038750
19-3280917943856839411125
20-799561865724400084556250
2162859004972802312944044375

[1,2,3,6,15,0,315,1890,-82215,708750,41008275,
 -1385549550,-33403344975,3426898600125,
 26529571443375,-13516476003780750,
 157765729690193625,84230651703487038750,
 -3280917943856839411125,-799561865724400084556250,
 62859004972802312944044375]