A173784 Number of numbers k such that 1/k is in the Cantor set and 3^n <= k < 3^(n+1).

1, 2, 4, 6, 9, 12, 18, 23, 28, 34, 42, 49, 61, 68, 80, 91, 103, 111, 128, 138, 156

Offset

0,2

Comments

This sequence gives the length of the rows in the irregular triangle A170952. See A121153 for the values of k.

Links

Table of n, a(n) for n=0..20.

Crossrefs

Sequence in context: A133041 A079492 A267161 * A094660 A005690 A364378

Adjacent sequences: A173781 A173782 A173783 * A173785 A173786 A173787

Keyword

nonn

Author

T. D. Noe, Feb 24 2010

Status

approved