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 A151734 #2 Mar 30 2012 16:51:06 %S A151734 0,1,2,4,3,6,4,7,8,12,7,10,12,10,8,18,16,22,22,18,18,24,20,24,23,30, %T A151734 35,22,22,32,30,30,38,36,32,32,42,47,51,34,42,44,58,46,60,63,63,52,64, %U A151734 52,48,42,58,65,57,46,56,56,66,70,80,81,79,66,84,84,98,78,94,79 %N A151734 A151732/2. %K A151734 nonn %O A151734 0,3 %A A151734 _N. J. A. Sloane_, Jun 15 2009