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 A249719 #10 Feb 12 2017 01:11:39 %S A249719 5,8,14,15,16,17,20,23,24,25,26,32,35,41,42,43,44,45,46,47,48,49,50, %T A249719 51,52,53,56,59,60,61,62,65,68,69,70,71,72,73,74,75,76,77,78,79,80,86, %U A249719 89,95,96,97,98,101,104,105,106,107,113,116,122,123,124,125,126,127,128,129,130,131 %N A249719 Complement of A051382. %C A249719 Numbers n whose base 3 expansion does not match (0|1)*(02)?(0|1)* %H A249719 Antti Karttunen, <a href="/A249719/b249719.txt">Table of n, a(n) for n = 1..10000</a> %H A249719 <a href="/index/Ar#3-automatic">Index entries for 3-automatic sequences</a>. %o A249719 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A249719 (define A249719 (COMPLEMENT 1 A051382)) %Y A249719 Complement: A051382. %Y A249719 Terms of A249720 halved. %Y A249719 Cf. A007089, A249721, A249733. %K A249719 nonn,base %O A249719 1,1 %A A249719 _Antti Karttunen_, Nov 05 2014