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A132151 Period 8: repeat [0, 1, 0, 0, 0, 0, -1, 0]. 0
0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..87.

Index entries for linear recurrences with constant coefficients, signature (-1,-1,-1,-1,-1,-1,-1).

FORMULA

a(n) = (1/8)*{-[(n+1) mod 8]+[(n+2) mod 8]+[(n+6) mod 8]-[(n+7) mod 8]}, with n>=0. - Paolo P. Lava, Nov 19 2007

a(n) = floor((n-1)/8) - floor((n-2)/8) - floor((n-6)/8) + floor((n-7)/8). - Wesley Ivan Hurt, Sep 01 2019

PROG

(PARI) a(n)=if(n%8==1, 1, n%8==6, -1, 0) \\ Charles R Greathouse IV, Jul 13 2016

CROSSREFS

Sequence in context: A288673 A030213 A187969 * A238469 A288596 A284745

Adjacent sequences:  A132148 A132149 A132150 * A132152 A132153 A132154

KEYWORD

sign,easy

AUTHOR

Paul Curtz, Nov 01 2007

STATUS

approved

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Last modified January 25 11:03 EST 2022. Contains 350567 sequences. (Running on oeis4.)