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 A269267 #30 Mar 31 2016 12:38:13 %S A269267 31,33,59,62,71,73,83,86,94,102,109,116,126,127,129,130,142,143,146, %T A269267 147,158,160,164,166,176,178,179,182,183,185,193,199,201,207,218,223, %U A269267 236,239,245,248,257,259,261,262,263,266,267,268,270,272,281,283,285,286 %N A269267 Indices k such that A107435(k) != A268057(k). %H A269267 Peter Kagey, <a href="/A269267/b269267.txt">Table of n, a(n) for n = 1..10000</a> %Y A269267 Complement of A269331. %Y A269267 Cf. A107435, A268057. %K A269267 nonn %O A269267 1,1 %A A269267 _Peter Kagey_, Feb 24 2016