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A020083 as a simple table

na(n)
01
10
20
32
48
541
6231
71527
811610
999850
10958561
1110160755
12117864768
131485096081
1420197306708
15294880677941
164600138575887
1776362300359740
181343976486331425
1924997962645764522
20489960067856984638

[1,0,0,2,8,41,231,1527,11610,99850,958561,
 10160755,117864768,1485096081,20197306708,
 294880677941,4600138575887,76362300359740,
 1343976486331425,24997962645764522,
 489960067856984638]