id:A099211 - OEIS Search Results

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a(n)=-2a(n-1)+4a(n-3).

+0
2

1, -2, 4, -4, 0, 16, -48, 96, -128, 64, 256, -1024, 2304, -3584, 3072, 3072, -20480, 53248, -94208, 106496, 0, -376832, 1179648, -2359296, 3211264, -1703936, -6029312, 24903680, -56623104, 89128960, -78643200, -69206016 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 1/(1+2x-4x^3); a(n)=A099212(n+4)/4.`
	CROSSREFS	`Adjacent sequences: A099208 A099209 A099210 this_sequence A099212 A099213 A099214` `Sequence in context: A009116 A118434 A090132 this_sequence A094225 A057277 A140734`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 06 2004`

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

AT&T Labs Research