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A114880 a(n) is the largest base-3 string such that the n-th number coprime to 3 does not divide any substring of a(n). 1
1, 212, 2111, 22222, 21112, 222111222, 212121212, 22112121, 212221222212, 2221221221222, 222222222222222, 22222222222222222, 1121212211122121211, 2121212121212121212, 112221112211111121, 21111111111111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..17.

EXAMPLE

a(3) = 212 (base three) because the 3rd number coprime to 4 is 4, and 4 does not divide any substring of a(3).

CROSSREFS

Sequence in context: A204364 A235180 A353139 * A348831 A200433 A222950

Adjacent sequences:  A114877 A114878 A114879 * A114881 A114882 A114883

KEYWORD

nonn,base

AUTHOR

Don Reble, Feb 20 2006

STATUS

approved

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Last modified May 23 23:53 EDT 2022. Contains 353993 sequences. (Running on oeis4.)