id:A090586 - OEIS Search Results

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Denominator of Sum/Product of first n numbers.

+0
6

1, 2, 1, 12, 8, 240, 180, 1120, 8064, 725760, 604800, 79833600, 68428800, 830269440, 10897286400, 2615348736000, 2324754432000, 711374856192000, 640237370572800, 11585247657984000 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000142(n)/A069268(n);` `a(p-1) = 2*A000142(p-2) for odd primes.`
	CROSSREFS	`Numerator=A090585.` `Sequence in context: A058843 A130559 A135256 this_sequence A048854 A151508 A164826` `Adjacent sequences: A090583 A090584 A090585 this_sequence A090587 A090588 A090589`
	KEYWORD	`nonn,frac`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 03 2003`

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Last modified November 25 13:42 EST 2009. Contains 167481 sequences.

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