%I #8 Dec 09 2015 21:39:36

%S 0,1,3,5,7,9,9,9,15,17,17,21,21,21,27,27,31,33,33,33,33,33,33,45,45,

%T 45,51,51,51,51,51,51,63,65,65,65,65,73,73,73,73,73,73,85,85,85,85,93,

%U 93,93,99,99,99,99,107,107,107,107,107,107,119,119,119,119,127,129,129,129,129,129,129,129,129,129,129,129

%N Largest base-2 palindrome m <= 2n, written in base 10.

%Y Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509.

%K nonn,base

%O 0,3

%A _N. J. A. Sloane_, Dec 09 2015