id:A094723 - OEIS Search Results

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Pell(n+2)-2^n.

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1, 3, 8, 21, 54, 137, 344, 857, 2122, 5229, 12836, 31413, 76686, 186833, 454448, 1103921, 2678674, 6494037, 15732284, 38089677, 92173782, 222961529, 539145416, 1303349513, 3150038746, 7611815613, 18390447188, 44426264421, 107310084894 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Binomial transform of A052955.`
	FORMULA	`G.f. : (1-x-x^2)/((1-2x)(1-2x-x^2)); a(n)=((1+sqrt(2))^n(3sqrt(2)/4+1)-(3sqrt(2)/4-1)(1-sqrt(2))^n)-2^n.`
	CROSSREFS	`Cf. A000129.` `Sequence in context: A038200 A030015 A103446 this_sequence A127358 A077849 A135473` `Adjacent sequences: A094720 A094721 A094722 this_sequence A094724 A094725 A094726`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 23 2004`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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