%I #6 Dec 09 2015 21:40:20
%S 0,1,2,2,4,4,4,4,8,8,10,10,10,13,13,13,16,16,16,16,20,20,20,23,23,23,
%T 26,26,28,28,28,28,28,28,28,28,28,28,28,28,40,40,40,40,40,40,40,40,40,
%U 40,40,40,52,52,52,52,56,56,56,56,56,56,56,56,56,56,56,56,68,68,68,68,68,68,68,68,68,68,68,68,80,80
%N Largest base-3 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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