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 A023598 #3 Mar 30 2012 18:55:53 %S A023598 1,2,4,8,12,20,28,41,53,69,91,110,141,167,197,235,274,317,360,416,464, %T A023598 520,587,646,715,790,866,950,1036,1117,1208,1313,1408,1521,1637,1751, %U A023598 1867,2002,2131,2252,2407,2550,2703,2857,3001,3167,3334,3515 %N A023598 Convolution of A023532 and (1, p(1), p(2), ...). %K A023598 nonn %O A023598 1,2 %A A023598 _Clark Kimberling_