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A195640 as a simple table

na(n)
11
21
33
419
5391
625428
75422820
83868544673
99374373474455
1078121590505558308
112262375741577763676620
12229653423345084153764141412
1382310438395814327559991274396712
14104810153877236566878585186368604425875

[1,1,3,19,391,25428,5422820,3868544673,
 9374373474455,78121590505558308,
 2262375741577763676620,
 229653423345084153764141412,
 82310438395814327559991274396712,
 104810153877236566878585186368604425875]