id:A099046 - OEIS Search Results

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(4*0^n+5^n*binomial(2n,n))/5.

+0
3

1, 2, 30, 500, 8750, 157500, 2887500, 53625000, 1005468750, 18992187500, 360851562500, 6888984375000, 132038867187500, 2539208984375000, 48970458984375000, 946762207031250000, 18343517761230468750 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`(1+(k-1)sqrt(1-4kx))/(ksqrt(1-4kx)) is the g.f. for ((k-1)0^n+k^nC(2n,n))/k.`
	FORMULA	`G.f.: (1+4sqrt(1-20x))/(5sqrt(1-20x))`
	CROSSREFS	`Cf. A069723, A088218, A099044, A099045.` `Sequence in context: A060042 A134362 A143414 this_sequence A020547 A160694 A013525` `Adjacent sequences: A099043 A099044 A099045 this_sequence A099047 A099048 A099049`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 24 2004`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research