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A103774 Number of ways to write n! as product of squarefree numbers. 2
1, 1, 2, 2, 6, 10, 42, 42, 82, 204, 1196, 1556, 10324, 34668, 104948, 104964 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

a(n) = A050320(A000142(n)).

LINKS

Index entries for sequences related to factorial numbers.

EXAMPLE

n=5, 5! = 1*2*3*4*5 = 120 = 2 * 2 * 2 * 3 * 5: a(5)=#{2*2*2*3*5,2*2*2*15,2*2*6*5,2*2*30,2*2*3*10,2*6*10}=6.

CROSSREFS

Cf. A103775.

Sequence in context: A151575 A076907 A153897 * A036052 A091764 A192933

Adjacent sequences:  A103771 A103772 A103773 * A103775 A103776 A103777

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 15 2005

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Last modified February 14 05:09 EST 2012. Contains 205570 sequences.