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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
OFFSET
0,1
FORMULA
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 * A370124 A238469 A288596
KEYWORD
sign,easy
AUTHOR
Paul Curtz, Nov 01 2007
STATUS
approved