id:A114960 - OEIS Search Results

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Expansion of (-1+3*x-5*x^2+4*x^3)/((1-2*x)*(2*x^2-1)*(x-1)^2).

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1, 1, 6, 11, 30, 57, 128, 247, 518, 1013, 2068, 4083, 8242, 16369, 32880, 65519, 131310, 262125, 524780, 1048555, 2098154, 4194281, 8390632, 16777191, 33558502, 67108837, 134225892, 268435427, 536887266, 1073741793 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`a(n+2) - 2*a(n+1) + a(n) = A113979(n+4) - A113979(n+3)`
	FORMULA	`a(n) = 2^n - n - 1 - ((-1)^n - 1)2^(1/2n)*sqrt(2)/4`
	CROSSREFS	`Cf. A113979.` `Sequence in context: A087737 A034489 A105508 this_sequence A100093 A130667 A108698` `Adjacent sequences: A114957 A114958 A114959 this_sequence A114961 A114962 A114963`
	KEYWORD	`easy,nonn`
	AUTHOR	`Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Feb 21 2006`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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