A158388 - OEIS

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A158388

-1 followed by infinitely many 1's.

-1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	LINKS	`Table of n, a(n) for n=0..104.`
	FORMULA	`G.f.: (2x-1)/(1-x) . [From Philippe DELEHAM, Mar 19 2009]` `a(n)=1-2[C(2n,n) mod 2] [From Paolo P. Lava, Mar 24 2009]`
	CROSSREFS	`Sequence in context: A121241 A122188 * A162285 A071935 A096809 A131561` `Adjacent sequences: A158385 A158386 A158387 * A158389 A158390 A158391`
	KEYWORD	`sign,mult`
	AUTHOR	`Jaroslav Krizek, Mar 17 2009`
	STATUS	`approved`

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Last modified May 23 23:31 EDT 2013. Contains 225613 sequences.