id:A122099 - OEIS Search Results

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A122099

a(0)=1, a(1)=1, a(2)=0, a(n)=-3*a(n-1)+a(n-3) for n>2.

+0
4

1, 1, 0, 1, -2, 6, -17, 49, -141, 406, -1169, 3366, -9692, 27907, -80355, 231373, -666212, 1918281, -5523470, 15904198, -45794313, 131859469, -379674209, 1093228314, -3147825473, 9063802210, -26098178316, 75146709475, -216376326215, 623030800329, -1793945691512, 5165460748321 (list; graph; listen)

	OFFSET	`0,5`
	FORMULA	`G.f.:(1+4x+3x^2)/(1+3*x-x^3)`
	CROSSREFS	`Sequence in context: A036365 A052536 A122100 this_sequence A026165 A148445 A148446` `Adjacent sequences: A122096 A122097 A122098 this_sequence A122100 A122101 A122102`
	KEYWORD	`sign`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 18 2006`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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