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 A030672 #3 Aug 24 2012 10:47:40 %S A030672 5,6,23,27,34,37,42,14,48,54,56,61,203,66,69,73,77,247,26,267,86,89, %T A030672 289,299,312,318,321,328,331,337,113,362,371,118,387,123,397,128,409, %U A030672 416,134,426,438,44,444,447,46,473,477,479,483,489,491,501,507 %N A030672 Square root of A030671. %K A030672 nonn,base %O A030672 1,1 %A A030672 _Patrick De Geest_