id:A133669 - OEIS Search Results

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a(n)=a(n-1)-49*a(n-2), a(0)=1, a(1)=7 .

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1, 7, -42, -385, 1673, 20538, -61439, -1067801, 1942710, 54264959, -40927831, -2699910822, -694447103, 131601183175, 165629091222, -6282828884353, -14398654354231 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.:(1+6x)/(1-x+49x^2) .` `a(n)=Sum_{k, 0<=k<=n}A133607(n,k)*7^k. - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 30 2007`
	CROSSREFS	`Sequence in context: A073506 A025593 A048862 this_sequence A043064 A045800 A062336` `Adjacent sequences: A133666 A133667 A133668 this_sequence A133670 A133671 A133672`
	KEYWORD	`easy,sign`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 28 2007`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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