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A019018 as a simple table

na(n)
23
37
442
5190
6884
75565
834840
9205806
101247875
117958423
1252883120
13359233719
142459686110
1516915593735
16116848978672

[3,7,42,190,884,5565,34840,205806,1247875,7958423,
 52883120,359233719,2459686110,16915593735,
 116848978672]