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 A156244 #4 Sep 14 2012 11:06:54 %S A156244 4,11,16,22,28,35,40,48,53,58,65,70,78,83,89,94,99,107,112,119,124, %T A156244 130,135,140,148,153,160,165,171,178,184,190,197,203,208,215,220,226, %U A156244 231,238,244,249,256,261,269,274,281,287,294,299,305,310,317,322,328,335 %N A156244 Bisection of A078649. %F A156244 a(n) = A078649(2n). %K A156244 nonn %O A156244 1,1 %A A156244 _Benoit Cloitre_, Feb 07 2009