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A021804 as a simple table

na(n)
01
118
2213
32098
418669
5155946
61248661
79704706
873804797
9552214234
104080381669
1129857556274
12216794571085
131564401539082
1411232205936437
1580315244188002
16572351251736733
174067348923173690
1828836875054284165

[1,18,213,2098,18669,155946,1248661,9704706,
 73804797,552214234,4080381669,29857556274,
 216794571085,1564401539082,11232205936437,
 80315244188002,572351251736733,4067348923173690,
 28836875054284165]