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 A227030 #12 Jul 01 2013 04:23:48 %S A227030 7,13,19,23,31,37,43,47,53,61,63,67,73,75,79,83,89,97,103,109,113,117, %T A227030 127,131,139,151,153,157,163,167,173,175,181,193,199,207,211,223,229, %U A227030 233,241,243,245,251,257,263,271,273,277,283,285,293,297,307,313,317 %N A227030 Numbers that are neither the difference nor the product of two primes. %F A227030 A007921 \ A001358. %Y A227030 Cf. A007921, A157931. %K A227030 nonn %O A227030 1,1 %A A227030 _Gerasimov Sergey_, Jun 28 2013