A265545 a(n) = smallest base-3 palindrome m >= n such that every base-3 digit of n is <= the corresponding digit of m; m is written in base 3.

0, 1, 2, 11, 11, 22, 22, 22, 22, 101, 101, 202, 111, 111, 212, 121, 121, 222, 202, 202, 202, 212, 212, 212, 222, 222, 222, 1001, 1001, 2002, 1111, 1111, 2112, 1221, 1221, 2222, 1111, 1111, 2112, 1111, 1111, 2112, 1221, 1221, 2222, 1221, 1221, 2222, 1221, 1221, 2222, 1221, 1221, 2222, 2002, 2002, 2002, 2112, 2112, 2112

Offset

0,3

Links

Table of n, a(n) for n=0..59.

Crossrefs

Sequences related to palindromic floor and ceiling: A175298, A206913, A206914, A261423, A262038, and the large block of consecutive sequences beginning at A265509.

See A206913 for the values of m written in base 10.

Sequence in context: A145523 A168413 A265561 * A153705 A290394 A292779

Adjacent sequences: A265542 A265543 A265544 * A265546 A265547 A265548

Keyword

nonn,base

Author

N. J. A. Sloane, Dec 10 2015

Status

approved