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A043089 Every string of 2 consecutive base 3 digits contains exactly 2 distinct numbers. 7
0, 1, 2, 3, 5, 6, 7, 10, 11, 15, 16, 19, 20, 21, 23, 30, 32, 33, 34, 46, 47, 48, 50, 57, 59, 60, 61, 64, 65, 69, 70, 91, 92, 96, 97, 100, 101, 102, 104, 138, 140, 141, 142, 145, 146, 150, 151, 172, 173, 177, 178, 181, 182, 183, 185, 192 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Essentially the same as A031941. [From R. J. Mathar, Oct 20 2008]

LINKS

Table of n, a(n) for n=0..55.

CROSSREFS

Sequence in context: A240101 A032892 A031941 * A088952 A303541 A293523

Adjacent sequences:  A043086 A043087 A043088 * A043090 A043091 A043092

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 25 10:23 EDT 2019. Contains 321470 sequences. (Running on oeis4.)