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 A077104 #4 May 11 2007 03:00:00 %S A077104 1,3,18,12,200,14,3364,15,722,328,9801,42,25281,116,1800,165,36992,810 %N A077104 Duplicate of A073815. %K A077104 dead %O A077104 1,2