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 A084308 #4 May 11 2007 03:00:00 %S A084308 2,6,11,24,42,121,30,319,99,1592,344,574,3786,4196,650,4619,217,1532 %N A084308 Duplicate of A067605. %K A084308 dead %O A084308 1,1