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A005441 as a simple table

na(n)
21
31
44
54
69
78
855
921
10104
1162
12429
13196
14800
15698
164674
172070
187721
197154

[1,1,4,4,9,8,55,21,104,62,429,196,800,698,4674,
 2070,7721,7154]