A108413 - OEIS

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A108413

Expansion of (1+x+5x^2+2x^3)/(1-4x^2+x^4).

1, 1, 1, -2, -5, 7, 19, -26, -71, 97, 265, -362, -989, 1351, 3691, -5042, -13775, 18817, 51409, -70226, -191861, 262087, 716035, -978122, -2672279, 3650401, 9973081, -13623482, -37220045, 50843527, 138907099, -189750626, -518408351 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,4`
	LINKS	`Table of n, a(n) for n=0..32.`
	FORMULA	`a(0)=a(1)=a(2)=1, a(n)a(n+3) - a(n+1)a(n+2) = -3.`
	CROSSREFS	`Unsigned values are in A002531.` `Sequence in context: A128005 A045359 A042809 * A002531 A042449 A046115` `Adjacent sequences: A108410 A108411 A108412 * A108414 A108415 A108416`
	KEYWORD	`sign`
	AUTHOR	`Ralf Stephan, Jun 05 2005`
	STATUS	`approved`

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Last modified May 20 11:18 EDT 2013. Contains 225459 sequences.