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A348812 as a simple table

na(n)
142
23846
3300048
422171638
51595739432
6113110095540
77939173652032
8553477015433958
938395171272416568
102653558455501023196

[42,3846,300048,22171638,1595739432,113110095540,
 7939173652032,553477015433958,38395171272416568,
 2653558455501023196]