id:A085087 - OEIS Search Results

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a(1) = 1; for n>1, a(n) = a(n-1)*n if n is a prime, a(n) = a(n-1)/n if n is composite and divides a(n-1) else a(n) = a(n-1).

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1, 2, 6, 6, 30, 5, 35, 35, 35, 35, 385, 385, 5005, 5005, 5005, 5005, 85085, 85085, 1616615, 1616615, 1616615, 1616615, 37182145, 37182145, 37182145, 37182145, 37182145, 37182145, 1078282205, 1078282205, 33426748355, 33426748355 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Let k be the number of members of A089581 that are <= n; then a(n) = A034386(n)/A099788(k). - David Wasserman (wasserma(AT)spawar.navy.mil), Jan 25 2005`
	CROSSREFS	`Cf. A034386, A089581, A099788.` `Sequence in context: A005226 A087310 A130087 this_sequence A072983 A055204 A008339` `Adjacent sequences: A085084 A085085 A085086 this_sequence A085088 A085089 A085090`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jul 02 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 25 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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