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 A096933 #2 May 11 2007 03:00:00 %S A096933 720,2880,46080,25920,184320,2949120,129600,414720,11796480,1658880 %N A096933 Duplicate of A061299. %K A096933 dead %O A096933 1,1