id:A010675 - OEIS Search Results

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Period 2.

+0
1

0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0, 4, 0 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=2[1-(-1)^n], a(n)=4(n mod 2) - Paolo P. Lava (ppl(AT)spl.at), Oct 20 2006` `O.g.f.: -2/(1+x)-2/(x-1) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2008`
	CROSSREFS	`Sequence in context: A147986 A147988 A019920 this_sequence A035673 A035638 A098002` `Adjacent sequences: A010672 A010673 A010674 this_sequence A010676 A010677 A010678`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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