id:A133667 - OEIS Search Results

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a(n)=a(n-1)-25*a(n-2), a(0)=1, a(1)=5 .

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1, 5, -20, -145, 355, 3980, -4895, -104395, 17980, 2627855, 2178365, -63518020, -117976895, 1469973605, 4419395980, -32329944145, -142814843645, 665433759980, 4235804851105, -12400039148395, -118295160426020, 191705818283855 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.:(1+4x)/(1-x+25x^2) .` `a(n)=Sum_{k, 0<=k<=n}A133607(n,k)*5^k. - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 29 2007`
	CROSSREFS	`Sequence in context: A024066 A009569 A061964 this_sequence A000877 A077817 A032324` `Adjacent sequences: A133664 A133665 A133666 this_sequence A133668 A133669 A133670`
	KEYWORD	`easy,sign`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 28 2007`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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