id:A064031 - OEIS Search Results

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Product of non-unitary divisors of n!.

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1, 1, 1, 576, 207360000, 26956124946896309452800000000000, 2841003716170671644367609186370356458508919205193278721884160000000000000000000000 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n) = A061538(n!) = (n!)^(A048105(n!)/2) = (n!)^((A000005(n!)-A034444(n!))/2)`
	EXAMPLE	`n=6: 720 has 22 non-unitary divisors: a(6)=720^11=26956124946896309452800000000000`
	CROSSREFS	`Cf. A048656, A048657, A061537, A061538, A000142, A048105, A000005, A034444.` `Adjacent sequences: A064028 A064029 A064030 this_sequence A064032 A064033 A064034` `Sequence in context: A013775 A068277 A068289 this_sequence A013911 A104937 A031726`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Sep 13 2001`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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