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A175175 Number of primitive numbers k such that 1/k is in the Cantor set and 3^n <= k < 3^(n+1). 0
1, 2, 2, 3, 3, 6, 5, 5, 6, 8, 7, 12, 7, 12, 11, 12, 8, 17, 10, 18, 19, 18, 14, 25, 18, 21, 23, 24, 19, 31, 21, 36, 28, 30, 25, 32, 27, 35, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Primitive means that 3 does not divide k. First differences of A173784. The values of k are in A173793.

LINKS

Table of n, a(n) for n=0..38.

CROSSREFS

Sequence in context: A143269 A036817 A239962 * A116417 A271410 A196055

Adjacent sequences:  A175172 A175173 A175174 * A175176 A175177 A175178

KEYWORD

nonn

AUTHOR

T. D. Noe, Feb 28 2010

STATUS

approved

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Last modified April 18 06:14 EDT 2021. Contains 343072 sequences. (Running on oeis4.)