A094375 - OEIS

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A094375

a(n)=(4^n-2^n)/2+3^n.

1, 4, 15, 55, 201, 739, 2745, 10315, 39201, 150499, 582825, 2273275, 8918001, 35144659, 138992505, 551203435, 2190497601, 8719009219, 34747027785, 138600952795, 553242074001, 2209482560179, 8827471984665, 35278511073355 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform of A094374.`
	FORMULA	`G.f. : (1-5x+5x^2)/((1-2x)(1-3x)(1-4x)); a(n)=9a(n-1)-26a(n-2)+24a(n-3). a(n)=A006516(n)+A000244(n).`
	CROSSREFS	`Sequence in context: A039717 A026013 A050183 * A047018 A064813 A183932` `Adjacent sequences: A094372 A094373 A094374 * A094376 A094377 A094378`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 28 2004`

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Last modified February 16 21:30 EST 2012. Contains 205971 sequences.