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%I #6 Dec 09 2015 21:40:57
%S 0,1,2,3,3,5,5,5,5,5,10,10,10,10,10,15,15,17,17,17,17,21,21,21,21,25,
%T 25,25,25,29,29,29,29,29,34,34,34,34,38,38,38,38,42,42,42,42,46,46,46,
%U 46,46,51,51,51,51,55,55,55,55,59,59,59,59,63,63,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65
%N Largest base-4 palindrome m <= n, 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
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