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A132708 First differences of A070366. 0
4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1, 4, 2, 1, -4, -2, -1 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

FORMULA

Hexaperiodic or period 6: repeat 4, 2, 1, -4, -2, -1.

a(n)=(1/6){-5*(n mod 6)-[(n+1) mod 6]-2*[(n+2) mod 6]+5*[(n+3) mod 6]+[(n+4) mod 6]+2*[(n+5) mod 6]}, with n>=0 - Paolo P. Lava (paoloplava(AT)gmail.com), Dec 19 2007

CROSSREFS

Sequence in context: A023526 A082901 A136619 * A153727 A016506 A133455

Adjacent sequences:  A132705 A132706 A132707 * A132709 A132710 A132711

KEYWORD

sign

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Nov 16 2007

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.