id:A064167 - OEIS Search Results

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Product of numerator and denominator of the n-th harmonic number, 1 + 1/2 + 1/3 +...+ 1/n.

+0
1

1, 6, 66, 300, 8220, 980, 50820, 213080, 17965080, 18600120, 2320468920, 2384502120, 412970037480, 422245703880, 430902992520, 1756076802480 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Numerator and denominator in definition have no common divisors >1.`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`The 3rd harmonic number is 11/6. So a(3) = 11 * 6 = 66.`
	CROSSREFS	`Sequence in context: A045641 A071276 A119172 this_sequence A119073 A028559 A163699` `Adjacent sequences: A064164 A064165 A064166 this_sequence A064168 A064169 A064170`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Sep 19 2001`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

AT&T Labs Research