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 A060243 #22 Jul 09 2017 20:54:32 %S A060243 1,1,1,2,2,2,3,4,4,3,5,7,9,7,5,7,12,16,16,12,7,11,19,29,31,29,19,11 %N A060243 Duplicate of A054225. %K A060243 dead %O A060243 0,4 %A A060243 _N. J. A. Sloane_, Mar 22 2001