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A010735 Period 2: repeat (9,10). 2
9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

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

FORMULA

a(n)=-1/2*(-1)^n+19/2 =10*(n mod 2)+9*[(n+1) mod 2] - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 27 2006

G.f. ( -9-10*x ) / ( (x-1)*(1+x) ). - R. J. Mathar, Nov 21 2011

CROSSREFS

Sequence in context: A020508 A158001 A157763 * A063543 A096166 A078548

Adjacent sequences:  A010732 A010733 A010734 * A010736 A010737 A010738

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 16:41 EST 2012. Contains 205938 sequences.