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A124997 as a simple table

na(n)
10
20
30
425506
51759280998
6854818404562894
73588226034666378581610
8138311081613064367684548901556
950272239752141442901464758051467073726
10174927321882862834702052846250836696969014873138
115889117928937174007411459040006660524033737246962655301188

[0,0,0,25506,1759280998,854818404562894,
 3588226034666378581610,
 138311081613064367684548901556,
 50272239752141442901464758051467073726,
 174927321882862834702052846250836696969014873138,
 58891179289371740074114590400066605240337372469626\
 55301188]