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A237411 as a simple table

na(n)
1354008
26627450
3125750824
43029315052
574740595664
61668740442760
736546653191142
8842126502478880
919674093304667730
10447934704016463420
1110135886871027538506
12232015073246807414804
135340726310335786917066

[354008,6627450,125750824,3029315052,74740595664,
 1668740442760,36546653191142,842126502478880,
 19674093304667730,447934704016463420,
 10135886871027538506,232015073246807414804,
 5340726310335786917066]