id:A135431 - OEIS Search Results

Search: id:A135431

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a(n)=a(n-1)+a(n-2)+a(n-3)-a(n-4) with a(0)=0, a(1)=1, a(2)=2 and a(3)=3.

+0
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0, 1, 2, 3, 6, 10, 17, 30, 51, 88, 152, 261, 450, 775, 1334, 2298, 3957, 6814, 11735, 20208, 34800, 59929, 103202, 177723, 306054, 527050, 907625, 1563006, 2691627, 4635208, 7982216, 13746045, 23671842, 40764895 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`O.g.f.: x*(1+x)/(1-x-x^2-x^3+x^4) . a(n)=A116732(n+1)+A116732(n+2). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 31 2008`
	CROSSREFS	`Adjacent sequences: A135428 A135429 A135430 this_sequence A135432 A135433 A135434` `Sequence in context: A026669 A023614 A001610 this_sequence A123908 A026397 A026779`
	KEYWORD	`nonn`
	AUTHOR	`Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Dec 13 2007`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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