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A189552 as a simple table

na(n)
1140
228440
3977092
411544464
580270588
6379997096
71456853916
84628970120
912936888748
1032366459464
1175421739904
12160238955844
13324918108616
14626280932600
151150395462428
162026063806864
173474982794008
185750861887452

[140,28440,977092,11544464,80270588,379997096,
 1456853916,4628970120,12936888748,32366459464,
 75421739904,160238955844,324918108616,
 626280932600,1150395462428,2026063806864,
 3474982794008,5750861887452]