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A007888 as a simple table

na(n)
11
21
33
42
53
64
71
8-6
945
10-86
11173
12-100
132641
14-48311
15717766
16-15527527
17395694683
18-11210796201
19356923346235
20-12694851400717
21501010779605741
22-21827969798073020
231044997258445975691
24-54740156237911040100

[1,1,3,2,3,4,1,-6,45,-86,173,-100,2641,-48311,
 717766,-15527527,395694683,-11210796201,
 356923346235,-12694851400717,501010779605741,
 -21827969798073020,1044997258445975691,
 -54740156237911040100]