id:A015454 - OEIS Search Results

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Generalized Fibonacci numbers.

+0
3

1, 1, 9, 73, 593, 4817, 39129, 317849, 2581921, 20973217, 170367657, 1383914473, 11241683441, 91317382001, 741780739449, 6025563297593, 48946287120193, 397595860259137, 3229713169193289, 26235301213805449 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`a(n)/a(n-1) tends to (8 + 2*sqrt(17))/2 = exp ArcSinh 4. - Gary W. Adamson (qntmpkt(AT)yahoo.com), Dec 26 2007`
	LINKS	`Tanya Khovanova, Recursive Sequences`
	FORMULA	`a(n) = 8 a(n-1) + a(n-2).` `a(n)=Sum_{k, 0<=k<=n}7^k*A055830(n,k) . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 18 2006`
	CROSSREFS	`Sequence in context: A126641 A081627 A023001 this_sequence A121246 A086226 A015465` `Adjacent sequences: A015451 A015452 A015453 this_sequence A015455 A015456 A015457`
	KEYWORD	`nonn,easy`
	AUTHOR	`Olivier Gerard (ogerard(AT)ext.jussieu.fr)`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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