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A196585 as a simple table

na(n)
12
220
3120
4698
54078
624032
7141460
8830652
94886324
1028734972
11168979540
12993659990
135842982750
1434359849144
15202051334982
161188148848850
176986829817634
1841085617221494
19241601571059434
201420723058603468

[2,20,120,698,4078,24032,141460,830652,4886324,
 28734972,168979540,993659990,5842982750,
 34359849144,202051334982,1188148848850,
 6986829817634,41085617221494,241601571059434,
 1420723058603468]