id:A080326 - OEIS Search Results

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Denominator of Sum(k^mu(k): 1<=k<=n), where mu is the Moebius function (A008683).

+0
5

1, 2, 6, 6, 30, 30, 210, 210, 210, 210, 2310, 2310, 30030, 30030, 30030, 30030, 510510, 510510, 9699690, 9699690, 9699690, 9699690, 223092870, 223092870, 223092870, 223092870, 223092870, 223092870, 6469693230, 3234846615 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) is a divisor of A034386(n), the product of the primes <= n. Does a(n) = A034386(n) for infinitely many n?`
	CROSSREFS	`Numerators are in A080306. Cf. A080304, A080305, A034386.` `Sequence in context: A099566 A147299 A090549 this_sequence A034386 A084343 A083907` `Adjacent sequences: A080323 A080324 A080325 this_sequence A080327 A080328 A080329`
	KEYWORD	`nonn,frac`
	AUTHOR	`Dean Hickerson (dean.hickerson(AT)yahoo.com), Feb 15 2003`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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