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 A107686 #8 Mar 30 2012 18:50:50 %S A107686 0,1,2,3,4,5,7,8,9,10,11,15,16,17,18,19,20,21,23,26,27,31,32,33,34,35, %T A107686 36,37,39,40,41,42,43,47,50,51,52,53,55,58,59,63,64,65,66,67,68,69,71, %U A107686 72,73,74,75,79,80,81,82,83,84,85,87,90,91,95,98,99,100,101,103,104,105 %N A107686 If n=0 then 0 else smallest number greater than its predecessor and having in binary representation less zeros or more blocks of contiguous zeros. %C A107686 A023416(a(n+1)) < A023416(a(n)) or A087116(a(n+1))>A087116(a(n)); %C A107686 complement of A107687; A107688(n) = a(n+1) - a(n); %C A107686 A107684 is a subsequence. %H A107686 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %Y A107686 Cf. A007088. %K A107686 nonn %O A107686 0,3 %A A107686 _Reinhard Zumkeller_, May 20 2005