A164708 - OEIS

%I #11 Feb 08 2026 18:08:50

%S 11,13,19,22,23,25,26,29,35,38,39,43,44,45,46,47,49,50,52,53,55,57,58,

%T 59,61,67,70,71,75,76,77,78,79,83,86,87,88,89,90,91,92,93,94,95,97,98,

%U 100,101,103,104,105,106,107,109,110,111,113,114,115,116,117,118,121

%N Those positive integers missing from sequence A164707. Those positive integers that, when written in binary, contain at least two runs of 1's that are of differing lengths.

%C Clarification: A binary number consists of "runs" completely of 1's alternating with runs completely of 0's. No two or more runs all of the same digit are adjacent.

%t Select[Range[200],Length[Union[Length/@Select[Split[IntegerDigits[ #,2]], MemberQ[ #,1]&]]]>1&] (* _Harvey P. Dale_, May 28 2016 *)

%Y Cf. A164707.

%K base,nonn

%O 1,1

%A _Leroy Quet_, Aug 23 2009

%E More terms from _Max Alekseyev_, Feb 03 2010