id:A117481 - OEIS Search Results

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Numbers a(n)=n*(n-1)*(n-2)*(n-3)*...*(n-k) such that (n-k) is the largest prime number smaller than n.

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1, 2, 6, 12, 60, 30, 210, 56, 504, 5040, 55440, 132, 1716, 182, 2730, 43680, 742560, 306, 5814, 380, 7980, 175560, 4037880, 552, 13800, 358800, 9687600, 271252800, 7866331200, 870, 26970, 992, 32736, 1113024, 38955840, 1401410240, 51889178880 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=n(n-1)(n-2)(n-3)...*(n-k)`
	EXAMPLE	`a(10)=1098*7=5040 because 7 is the largest possible prime number smaller than 10.`
	CROSSREFS	`Sequence in context: A119862 A111936 A002805 this_sequence A083268 A085911 A058312` `Adjacent sequences: A117478 A117479 A117480 this_sequence A117482 A117483 A117484`
	KEYWORD	`nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 25 2006`

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

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