id:A087438 - OEIS Search Results

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3*2^(2(n-1))+2^(n-2)(n+1).

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1, 4, 15, 56, 212, 816, 3184, 12544, 49728, 197888, 789248, 3151872, 12596224, 50360320, 201388032, 805437440, 3221504000, 12885491712, 51540852736, 206161051648, 824639225856, 3298546417664, 13194163650560, 52776608464896 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Binomial transform of A047926.`
	FORMULA	`G.f.: (1-4x+3x^2)/((1-2x)^2(1-4x)); E.g.f. : (3exp(4x)+(1+2x)exp(2x))/4.`
	CROSSREFS	`Adjacent sequences: A087435 A087436 A087437 this_sequence A087439 A087440 A087441` `Sequence in context: A047038 A001791 A047128 this_sequence A131497 A077823 A047108`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 03 2003`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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