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 A063675 #6 Dec 12 2014 10:39:12 %S A063675 1,2,5,8,18,29,57,96,183,318,603,1080,2047,3762 %N A063675 Erroneous version of A000943. %D A063675 B. Grünbaum, Convex Polytopes. Wiley, NY, 1967, p. 424. %K A063675 dead %O A063675 1,2