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a(n) = smallest base-7 palindrome m >= n such that every base-7 digit of n is <= the corresponding digit of m; m is written in base 7.
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%I #4 Dec 10 2015 10:38:30

%S 0,1,2,3,4,5,6,11,11,22,33,44,55,66,22,22,22,33,44,55,66,33,33,33,33,

%T 44,55,66,44,44,44,44,44,55,66,55,55,55,55,55,55,66,66,66,66,66,66,66,

%U 66,101,101,202,303,404,505,606,111,111,212,313,414,515,616,121,121,222,323,424,525,626,131,131,232,333,434

%N a(n) = smallest base-7 palindrome m >= n such that every base-7 digit of n is <= the corresponding digit of m; m is written in base 7.

%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 10 2015