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A131974 Period 8: repeat 1, 2, 3, 4, -5, -4, -3, -2. +0
2
1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2, 1, 2, 3, 4, -5, -4, -3, -2 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=(1/28)*{-11*(n mod 8)-4*[(n+1) mod 8]-4*[(n+2) mod 8]-4*[(n+3) mod 8]+31*[(n+4) mod 8]-4*[(n+5) mod 8]-4*[(n+6) mod 8]-4*[(n+7) mod 8]}, with n>=0. - Paolo P. Lava (ppl(AT)spl.at), Oct 08 2007

CROSSREFS

Sequence in context: A035343 A017880 A086144 this_sequence A062406 A073792 A017870

Adjacent sequences: A131971 A131972 A131973 this_sequence A131975 A131976 A131977

KEYWORD

sign

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Oct 06 2007

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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