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%I #6 Dec 09 2015 21:39:58
%S 0,1,11,101,111,1001,1001,1001,1111,10001,10001,10101,10101,10101,
%T 11011,11011,11111,100001,100001,100001,100001,100001,100001,101101,
%U 101101,101101,110011,110011,110011,110011,110011,110011,111111,1000001,1000001,1000001,1000001,1001001,1001001,1001001,1001001,1001001,1001001
%N Largest base-2 palindrome m <= 2n, written in base 2.
%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
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