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 A023599 #3 Mar 30 2012 18:55:53 %S A023599 4,6,12,19,24,33,43,55,65,78,92,109,128,143,160,181,204,226,250,272, %T A023599 298,325,353,382,414,446,475,509,543,580,620,659,696,740,781,822,866, %U A023599 911,959,1006,1054,1106,1160,1209,1260,1314,1370,1428,1487,1546 %N A023599 Convolution of A023532 and composite numbers. %K A023599 nonn %O A023599 1,1 %A A023599 _Clark Kimberling_