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 A023547 #3 Mar 30 2012 18:55:52 %S A023547 2,3,6,10,13,18,24,31,37,45,54,64,75,85,97,110,124,139,155,170,187, %T A023547 205,224,244,265,287,308,331,355,380,406,433,461,490,518,548,579,611, %U A023547 644,678,713,749,786,822,860,899,939,980,1022,1065,1109,1154 %N A023547 Convolution of natural numbers >= 2 and A023532. %K A023547 nonn %O A023547 1,1 %A A023547 _Clark Kimberling_