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 A090533 #3 May 19 2006 03:00:00 %S A090533 2,4,8,14,22,33,48,66,90,120,156,202,256,322,400,494,604,734,888,1067 %N A090533 Duplicate of A025003. %K A090533 dead %O A090533 1,1