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 A113912 #2 Jan 21 2019 19:01:55 %S A113912 23,53,61,71,97,193,239,313,461,487,523 %N A113912 Prime numbers in A092614. %K A113912 nonn %O A113912 0,1 %A A113912 _Jorge Coveiro_, Jan 29 2006