id:A131387 - OEIS Search Results

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Product of the non-zero digital products of n for all the bases 1 to n (a 'total digital-product factorial').

+0
6

1, 1, 1, 1, 2, 4, 12, 48, 48, 192, 2880, 2880, 25920, 552960, 3265920, 1935360, 116121600, 278691840, 9405849600, 26754416640, 94058496000, 3210529996800, 869100503040000, 423789959577600, 927040536576000, 135612787064832000 (list; graph; listen)

	OFFSET	`0,5`
	FORMULA	`a(n)=product{1<=p<=n, dp_p(n)} where dp_p(n) = product of the non-zero digits of n in base p.` `Cf. A131385, A010786, A007954.`
	CROSSREFS	`Sequence in context: A131529 A165901 A074449 this_sequence A152453 A004527 A002871` `Adjacent sequences: A131384 A131385 A131386 this_sequence A131388 A131389 A131390`
	KEYWORD	`nonn`
	AUTHOR	`Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jul 08 2007`

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Last modified March 18 09:28 EDT 2010. Contains 173524 sequences.

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