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 A030474 #8 Feb 15 2017 00:40:00 %S A030474 101,103,105,107,109,121,123,125,127,129,141,143,145,147,149,161,163, %T A030474 165,167,169,181,183,185,187,189,210,212,214,216,218,230,232,234,236, %U A030474 238,250,252,254,256,258,270,272,274,276,278,290,292,294 %N A030474 n does not have the property that all even digits occur together and all odd digits occur together. %C A030474 Asymptotic density 1. - _Charles R Greathouse IV_, Nov 13 2010 %H A030474 <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>. %K A030474 nonn,base,easy %O A030474 1,1 %A A030474 _Patrick De Geest_