id:A088688 - OEIS Search Results

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Binomial transform of A088689.

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0, 1, 3, 6, 12, 27, 63, 141, 297, 594, 1146, 2169, 4095, 7827, 15291, 30582, 62256, 127791, 262143, 534129, 1078101, 2156202, 4282878, 8477181, 16777215, 33288711, 66311703, 132623406, 266043972, 534479427, 1073741823, 2154658101 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=2^n-cos(pin/3)-3^(n/2)sin(pin/6)/sqrt(3)` `O.g.f.: -x(1-3x+3x^2+x^3)/[(2x-1)(x^2-x+1)(3x^2-3x+1)]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 02 2008`
	CROSSREFS	`Cf. A001045.` `Sequence in context: A054195 A054190 A101013 this_sequence A052103 A072168 A018011` `Adjacent sequences: A088685 A088686 A088687 this_sequence A088689 A088690 A088691`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 06 2003`

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

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