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A323877 as a simple table

na(n)
10
20
30
41
510
6125
72275
864673
93102204
10272277040
1146202044900
1215442093276764
1310171924771814520
1413188852179018387144
1533674263441006260931040
16169522275849148918884400912
171685048703908907788901122512512
1833116110237646373502366665503208064
191288337109916947580133035603563656989952
2099320901948403913391024993536094346775110656

[0,0,0,1,10,125,2275,64673,3102204,272277040,
 46202044900,15442093276764,10171924771814520,
 13188852179018387144,33674263441006260931040,
 169522275849148918884400912,
 1685048703908907788901122512512,
 33116110237646373502366665503208064,
 1288337109916947580133035603563656989952,
 99320901948403913391024993536094346775110656]