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A006927 as a simple table

na(n)
00
10
20
30
40
50
60
70
80
90
100
110
121
133
1421
15545
1630368
171782839
1895079080
194686063107

[0,0,0,0,0,0,0,0,0,0,0,0,1,3,21,545,30368,1782839,
 95079080,4686063107]