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 A051056 #3 Mar 30 2012 18:37:41 %S A051056 0,0,0,0,1,1,2,3,5,7,11,14,20,27,37,48,65,83,109,139,179,226,288,361, %T A051056 456,569,712,885,1105,1371,1708,2125 %N A051056 Record subsequence of b(3k), b()=A048142(). %K A051056 nonn %O A051056 0,7 %A A051056 _Wouter Meeussen_