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 A166110 #7 Mar 11 2014 01:32:48 %S A166110 2,4,5,8,9,10,12,16,17,18,19,20,21,24,25,32,33,34,35,36,37,38,40,41, %T A166110 42,44,48,49,50,51,52,56,64,65,66,67,68,69,70,71,72,73,74,75,76,77,80, %U A166110 81,82,83,84,85,88,89,96,97,98,99,100,101,102,104,105,108,112,113,128,129 %N A166110 A positive integer n is included if the longest contiguous run of similar digits in binary n is of 0's. %C A166110 For some n included in this sequence, it is possible that the longest run of 0's in binary n is of the same length as the longest run of 1's in binary n. (See sequence A090050.) %Y A166110 Cf. A043276, A090050, A166111. %K A166110 base,nonn %O A166110 1,1 %A A166110 _Leroy Quet_, Oct 06 2009 %E A166110 Extended by _Ray Chandler_, Mar 12 2010