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 A175228 #3 Mar 30 2012 19:00:23 %S A175228 1,4,8,10,14,16,20,22,25,27,30,33,35,38,40,44,46,49,51,54,56,58,62,64, %T A175228 66,69,72,75,77,80,82,85,87,90,92,94,96,99,102 %N A175228 Remaining sequence of step 3 of sieve from A175227. %C A175228 See A175227 for definition. %Y A175228 Cf. A099861. [From _R. J. Mathar_, Mar 13 2010] %K A175228 nonn %O A175228 1,2 %A A175228 _Jaroslav Krizek_, Mar 07 2010