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 A265512 a(n) = largest base-3 palindrome m <= n such that every base-3 digit of m is <= the corresponding digit of n; m is written in base 3. 0
 0, 1, 2, 0, 11, 11, 0, 11, 22, 0, 101, 101, 0, 111, 111, 0, 121, 121, 0, 101, 202, 0, 111, 212, 0, 121, 222, 0, 1001, 1001, 0, 1001, 1001, 0, 1001, 1001, 0, 1001, 1001, 0, 1111, 1111, 0, 1111, 1111, 0, 1001, 1001, 0, 1111, 1111, 0, 1221, 1221, 0, 1001, 2002, 0, 1001, 2002, 0, 1001, 2002, 0, 1001, 2002, 0, 1111, 2112 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..68. 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: A230696 A138542 A057862 * A102869 A274177 A364375 Adjacent sequences: A265509 A265510 A265511 * A265513 A265514 A265515 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Dec 09 2015 STATUS approved

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Last modified September 22 14:29 EDT 2023. Contains 365531 sequences. (Running on oeis4.)