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a(n) = smallest base-5 palindrome m >= n such that every base-5 digit of n is <= the corresponding digit of m; m is written in base 10.
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%I #4 Dec 10 2015 10:32:12

%S 0,1,2,3,4,6,6,12,18,24,12,12,12,18,24,18,18,18,18,24,24,24,24,24,24,

%T 26,26,52,78,104,31,31,57,83,109,36,36,62,88,114,41,41,67,93,119,46,

%U 46,72,98,124,52,52,52,78,104,57,57,57,83,109,62,62,62,88,114,67,67,67,93,119,72,72,72,98,124,78,78,78,78

%N a(n) = smallest base-5 palindrome m >= n such that every base-5 digit of n is <= the corresponding digit of m; m is 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 10 2015