id:A133511 - OEIS Search Results

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a(n) = 3 A113405(n)- A113405(n+1).

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0, 0, -1, 1, 2, 5, 7, 14, 27, 57, 114, 229, 455, 910, 1819, 3641, 7282, 14565, 29127, 58254, 116507, 233017, 466034, 932069, 1864135, 3728270, 7456539, 14913081, 29826162, 59652325, 119304647, 238609294, 477218587, 954437177, 1908874354, 3817748709, 7635497415 (list; graph; listen)

	OFFSET	`0,5`
	FORMULA	`2a(n)-a(n+1)=A133513(n).` `A113405(n)-a(n)=A131531(n).` `O.g.f.: x^2(3x-1)/((1-2x)(1+x)(1-x+x^2)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 22 2008`
	CROSSREFS	`Sequence in context: A022771 A132603 A022765 this_sequence A076720 A111328 A022629` `Adjacent sequences: A133508 A133509 A133510 this_sequence A133512 A133513 A133514`
	KEYWORD	`sign`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Nov 30 2007`
	EXTENSIONS	`Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 22 2008`

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Last modified December 4 20:00 EST 2008. Contains 151309 sequences.

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