A087449 - OEIS

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A087449

n4^(n-1)+2*4^n/3+1/3.

1, 4, 19, 91, 427, 1963, 8875, 39595, 174763, 764587, 3320491, 14330539, 61516459, 262843051, 1118481067, 4742359723, 20043180715, 84467690155, 355050629803, 1488921995947, 6230565890731, 26021775190699, 108485147273899 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform of A064017.`
	LINKS	`Table of n, a(n) for n=0..22.`
	FORMULA	`G.f.: (1-5x+7x^2)/((1-x)(1-4x)^2); a(n)=A002697(n)+A007583(n).`
	CROSSREFS	`Sequence in context: A015530 A181880 A010907 * A004253 A218988 A151253` `Adjacent sequences: A087446 A087447 A087448 * A087450 A087451 A087452`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry, Sep 05 2003`
	STATUS	`approved`

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Last modified May 19 15:27 EDT 2013. Contains 225433 sequences.