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A138443 as a simple table

na(n)
115
2180
33900
429400
5442860
61206660
76034320
811761380
937008840
10148705620
11221875680
12641431260
131187525640
141580340300
152694803280
165541089580
1710545132540
1812880092660
1922614594420
2032025069720
2137833555240

[15,180,3900,29400,442860,1206660,6034320,
 11761380,37008840,148705620,221875680,641431260,
 1187525640,1580340300,2694803280,5541089580,
 10545132540,12880092660,22614594420,32025069720,
 37833555240]