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A020073 as a simple table

na(n)
01
10
20
30
40
53
619
7120
8861
97000
1063875
11646742
127195012
1387239530
141145018831
1516173391001
16244622538902
173944538439805
1867550220781671
191224347751667801
2023415650750646695
21471239971356764753

[1,0,0,0,0,3,19,120,861,7000,63875,646742,7195012,
 87239530,1145018831,16173391001,244622538902,
 3944538439805,67550220781671,1224347751667801,
 23415650750646695,471239971356764753]