A134271 - OEIS

This site is supported by donations to The OEIS Foundation.

A134271

a(n)=a(n-2)+2a(n-3), n grt 3.

0, 1, 2, 0, 4, 4, 4, 12, 12, 20, 36, 44, 76, 116, 164 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Recurrence in A052947.`
	FORMULA	`O.g.f.: 1/2+1/2(-2x-5x^2+1)/(-1+x^2+2x^3). a(n) = A052947(n-1) + 2*A052947(n-2) - A052947(n-3) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 01 2008`
	CROSSREFS	`Cf. A078050.` `Sequence in context: A049797 A116578 A078050 * A094403 A166085 A129760` `Adjacent sequences: A134268 A134269 A134270 * A134272 A134273 A134274`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jan 30 2008`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 15:20 EST 2012. Contains 205823 sequences.