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A129753 Floor(prime(n)/nonprime(n)). 0
2, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = floor(A000040(n)/A018252(n)).

a(n) ~ log(n).

EXAMPLE

a(1) = [2/1] = 2.

a(2) = [3/4] = [0.75] = 0.

a(5) = [11/9] = [1.22222222] = 1.

a(16) = [53/25] = [2.12] = 2.

a(37) = [157/52] = [3.01923077] = 3.

CROSSREFS

Sequence in context: A143078 A106405 A089310 * A147693 A070936 A014081

Adjacent sequences:  A129750 A129751 A129752 * A129754 A129755 A129756

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Jun 02 2007

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.