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 A113068 #10 Nov 15 2021 10:40:49
%S A113068 5,53,1063,74413,5208913,364623913,3646239133,474011087293,
%T A113068 90062106585673,11708073856137493,819565169929624513,
%U A113068 8195651699296245133,1065434720908511867293,42617388836340474691723
%N A113068 Beginning with 5, primes of the form: least multiple of the previous term followed by a 3. Beginning with 5, a(n) is the least prime of the form k*a(n-1)*10 +3.
%H A113068 Harvey P. Dale, <a href="/A113068/b113068.txt">Table of n, a(n) for n = 1..100</a>
%t A113068 lm3[n_]:=Module[{k=1},While[!PrimeQ[10k*n+3],k++];10k*n+3]; NestList[ lm3,5,20] (* _Harvey P. Dale_, May 05 2019 *)
%K A113068 base,nonn
%O A113068 1,1
%A A113068 _Amarnath Murthy_, Jan 03 2006
%E A113068 More terms from _Joshua Zucker_, Jan 11 2006