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A166935 A positive integer n is included if the longest palindromic substring (or at least one of which that is tied for longest) in the binary representation of n consists of identically valued digits (all 0's or all 1's). 2

%I #7 Mar 11 2014 01:32:49

%S 1,2,3,4,6,7,8,12,14,15,16,23,24,28,29,30,31,32,40,47,48,56,58,60,61,

%T 62,63,64,79,80,95,96,104,112,116,120,121,122,124,125,126,127,128,159,

%U 160,176,191,192,208,223,224,232,240,242,244,248,249,250,251,252,253,254

%N A positive integer n is included if the longest palindromic substring (or at least one of which that is tied for longest) in the binary representation of n consists of identically valued digits (all 0's or all 1's).

%e 29 in binary is 11101. There are two substrings in this that are tied for longest palindromic substring, 111 and 101. Since 111 contains only 1's, then 29 is in this sequence.

%Y Cf. A050430, A166934, A174196.

%K base,nonn

%O 1,2

%A _Leroy Quet_, Oct 24 2009

%E Extended by _Ray Chandler_, Mar 11 2010

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Last modified June 17 13:58 EDT 2024. Contains 373445 sequences. (Running on oeis4.)