A117942 - OEIS

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A117942

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

1, -1, -2, -1, 1, 2, -2, 2, 4, -1, 1, 2, 1, -1, -2, 2, -2, -4, -2, 2, 4, 2, -2, -4, 4, -4, -8, -1, 1, 2, 1, -1, -2, 2, -2, -4, 1, -1, -2, -1, 1, 2, -2, 2, 4, 2, -2, -4, -2, 2, 4, -4, 4, 8, -2, 2, 4, 2, -2, -4, 4, -4, -8, 2, -2, -4, -2, 2, 4, -4, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`a(n)=a(3n)/a(0)=a(3n+1)/a(1)=a(3n+2)/a(2). Row sums of A117941. abs(A117942)=A117943.`
	CROSSREFS	`Sequence in context: A133098 A145788 A117592 * A066877 A029255 A029272` `Adjacent sequences: A117939 A117940 A117941 * A117943 A117944 A117945`
	KEYWORD	`sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 05 2006`

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Last modified February 15 13:26 EST 2012. Contains 205802 sequences.