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A071936 K(n+1,n) where K(x,y) is the Kronecker symbol (x/y). 0
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; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..120.

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 * A005088 A076142 A084904

Adjacent sequences:  A071933 A071934 A071935 * A071937 A071938 A071939

KEYWORD

easy,sign

AUTHOR

Benoit Cloitre, Jun 14 2002

STATUS

approved

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Last modified October 14 16:48 EDT 2019. Contains 328022 sequences. (Running on oeis4.)