id:A131710 - OEIS Search Results

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Overlay of Pell numbers: a(n)=A000129(n)+A000129(n-6).

+0
2

0, 1, 2, 5, 12, 29, 70, 170, 410, 990, 2390, 5770, 13930, 33630, 81190, 196010, 473210, 1142430, 2758070, 6658570, 16075210, 38808990, 93693190, 226195370, 546083930, 1318363230, 3182810390, 7683984010, 18550778410, 44785540830, 108121860070 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=A000129(n), n <=6. a(n)=10*A001333(n-3), n >=7.` `O.g.f.: x(1+x^2)(1-x^2+x^4)/(1-2x-x^2). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2008.`
	CROSSREFS	`Sequence in context: A077985 A054198 A054196 this_sequence A005593 A122745 A010374` `Adjacent sequences: A131707 A131708 A131709 this_sequence A131711 A131712 A131713`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Sep 14 2007`
	EXTENSIONS	`Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2008`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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