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 A140203 #4 Mar 30 2012 18:54:36 %S A140203 0,1,2,4,5,7,7,8,9,11,13,16,16,17,18,20,21,23,23,24,26,29,30,32,32,33, %T A140203 34,36,37,39,39,40,41,43,45,48,48,49,50,52,54,57,57,58,59,61,62,64,64, %U A140203 65,66,68,69,71,71,72,73,75,76,78,78,79,80,82,83,85,85,86,88,91,92,94,94,95,96 %N A140203 Partial sums of A140083. %K A140203 nonn %O A140203 0,3 %A A140203 _Nadia Heninger_ and _N. J. A. Sloane_, Jun 09 2008