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A265530
Largest base-3 palindrome m <= n, written in base 3.
0
0, 1, 2, 2, 11, 11, 11, 11, 22, 22, 101, 101, 101, 111, 111, 111, 121, 121, 121, 121, 202, 202, 202, 212, 212, 212, 222, 222, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1001, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1221, 1221, 1221, 1221, 2002, 2002, 2002, 2002
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: A222878 A090525 A328455 * A309477 A126806 A279197
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Dec 09 2015
STATUS
approved