id:A136297 - OEIS Search Results

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a(n)=3a(n-1)-3a(n-2)+3a(n-3).

+0
2

1, 3, 1, -3, -3, 3, 9, 9, 9, 27, 81, 189, 405, 891, 2025, 4617, 10449, 23571, 53217, 120285, 271917, 614547, 1388745, 3138345, 7092441, 16028523, 36223281, 81861597, 185000517, 418086603, 944843049, 2135270889, 4825543329, 10905346467, 24645222081, 55696256829, 125869143645 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`O.g.f.: (-1+5x^2)/(-1+3x-3x^2+3x^3). a(n)=A052103(n+1)-5*A052103(n-1). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 04 2008`
	CROSSREFS	`Sequence in context: A029155 A042951 A029154 this_sequence A049996 A143908 A117572` `Adjacent sequences: A136294 A136295 A136296 this_sequence A136298 A136299 A136300`
	KEYWORD	`sign,easy`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Mar 21 2008`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 04 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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