This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A053161 #11 Mar 18 2019 08:12:35 %S A053161 2,23,523,7523,751321,75331211,7753211113,977533111211,97753332211111, %T A053161 0,997753333211111221,99777533333211211211,9977754333332221111111, %U A053161 997775443333332211121111,99777754443333332111212111,0,999777755544433333332121111121,0,9997777766555444333333321211112111 %N A053161 Largest prime associated with A053095(n), or zero if no such prime exists. %H A053161 Chai Wah Wu, <a href="/A053161/b053161.txt">Table of n, a(n) for n = 1..298</a> %e A053161 a(7)=7753211113 because it is the largest prime consisting of the digits 2+3+5+7+11+13+17. %Y A053161 Cf. A053095, A053160. %K A053161 base,nonn %O A053161 1,1 %A A053161 _Enoch Haga_, Mar 19 2000 %E A053161 Edited and extended by _Ray Chandler_, Apr 08 2010 %E A053161 a(17)-a(19) from _Chai Wah Wu_, Mar 17 2019