A048619 - OEIS

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A048619

LCM of C(n,k) for all k is divisible by the central binomial coefficient. The quotients are listed.

1, 1, 1, 2, 1, 3, 3, 4, 2, 10, 5, 30, 15, 7, 7, 56, 28, 252, 126, 60, 30, 330, 165, 396, 198, 286, 143, 2002, 1001, 15015, 15015, 7280, 3640, 1768, 884, 15912, 7956, 3876, 1938, 38760, 19380, 406980, 203490, 99484, 49742, 1144066, 572033, 1961256, 980628 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	LINKS	`Index entries for sequences related to lcm's`
	FORMULA	`a(n) = A002944(n)/A001405(n)` `a(n)=lcm(1..n+1)/(floor((n+3)/2)*C(n+1,floor((n+3)/2)); - Paul Barry (pbarry(AT)wit.ie), Jul 03 2006`
	EXAMPLE	`If n=10 then A002944(10)=2520, A001405(10)=252, the quotient a(10)=10`
	CROSSREFS	`A001405, A002944.` `Sequence in context: A082666 A057938 A144623 * A116087 A163281 A116921` `Adjacent sequences: A048616 A048617 A048618 * A048620 A048621 A048622`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified February 16 19:01 EST 2012. Contains 205939 sequences.