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 A030493 #4 Mar 30 2012 18:56:18 %S A030493 1,2,4,6,7,8,10,13,14,17,19,21,22,25,27,30,31,34,35,37,40,42,43,44,46, %T A030493 49,53,54,56,60,63,64,67,69,73,74,77,81,83,84,88,90,93,94,98,101,103, %U A030493 105,106,109,113,115,116,120,123,125,128,129 %N A030493 n-th partial sum of A030298. %K A030493 nonn %O A030493 1,2 %A A030493 _Clark Kimberling_