A071936 - OEIS

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A071936

K(n+1,n) where K(x,y) is the Kronecker symbol (x/y).

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

	OFFSET	`1,1`
	FORMULA	`If n==2 (mod(8)) a(n)=-1 a(n)=1 otherwise`
	PROG	`(PARI) for(n=1, 150, print1(kronecker(n+1, n), ", "))`
	CROSSREFS	`Sequence in context: A096809 A131561 A110515 * A084904 A097516 A112316` `Adjacent sequences: A071933 A071934 A071935 * A071937 A071938 A071939`
	KEYWORD	`easy,sign`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 14 2002`

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Last modified February 16 12:15 EST 2012. Contains 205909 sequences.