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 A083444 #3 Jan 09 2009 03:00:00 %S A083444 23,41,61,83,113,131,137,173,179,191,197,199,223,229,311,313,317,331, %T A083444 337,353,373,379,397,401,409,443,449,461,463,467,601,641,643,647,661, %U A083444 683,719,733,739,773,797,829,863,883,911,919,937,971,977,991,997,1013 %N A083444 Erroneous duplicate of A052034. %K A083444 dead %O A083444 1,1