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A010732 (17-(-1)^n)/2. 5
8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (0,1).

FORMULA

Period 2.

a(n)=-1/2*(-1)^n+17/2 a(n)=9*(n mod 2)+8*[(n+1) mod 2] - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 20 2006

G.f. (-8-9*x) / ((x-1)*(1+x)). - R. J. Mathar, Nov 21 2011

CROSSREFS

Sequence in context: A019873 A011010 A019606 * A004164 A004449 A168098

Adjacent sequences:  A010729 A010730 A010731 * A010733 A010734 A010735

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 11:42 EST 2012. Contains 206011 sequences.