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A265516
a(n) = largest base-5 palindrome m <= n such that every base-5 digit of m is <= the corresponding digit of n; m is written in base 5.
0
0, 1, 2, 3, 4, 0, 11, 11, 11, 11, 0, 11, 22, 22, 22, 0, 11, 22, 33, 33, 0, 11, 22, 33, 44, 0, 101, 101, 101, 101, 0, 111, 111, 111, 111, 0, 121, 121, 121, 121, 0, 131, 131, 131, 131, 0, 141, 141, 141, 141, 0, 101, 202, 202, 202, 0, 111, 212, 212, 212, 0, 121, 222, 222, 222, 0, 131, 232, 232, 232, 0, 141, 242, 242, 242
OFFSET
0,3
CROSSREFS
Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509.
Sequence in context: A214158 A054425 A217101 * A256295 A179078 A256305
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Dec 09 2015
STATUS
approved