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A031948 Numbers in which the number of distinct base 3 digits is 2. 5
3, 5, 6, 7, 9, 10, 12, 14, 16, 17, 18, 20, 22, 23, 24, 25, 27, 28, 30, 31, 36, 37, 39, 41, 43, 44, 49, 50, 52, 53, 54, 56, 60, 62, 67, 68, 70, 71, 72, 74, 76, 77, 78, 79, 81, 82, 84, 85, 90, 91, 93, 94, 108, 109, 111, 112, 117, 118, 120, 122 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..60.

CROSSREFS

Sequence in context: A099467 A054353 A284555 * A247523 A169957 A165712

Adjacent sequences:  A031945 A031946 A031947 * A031949 A031950 A031951

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 23 15:54 EDT 2017. Contains 292361 sequences.