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 A194234 #11 Mar 31 2012 10:28:58 %S A194234 12,15,33,35,45,51,63,65,75,77,87,91,95,99,119,123,143,153,161,175, %T A194234 177,185,209,213,215,217,221,245,247,259,261,287,303,321,325,329,335, %U A194234 341,363,369,371,377,395,403,407,411,427,437,447,469,473 %N A194234 Elements of A196736 which are not prime powers (A000961). %K A194234 nonn,easy %O A194234 1,1 %A A194234 _Naohiro Nomoto_, Oct 12 2011