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A010681 Period 2: repeat (0,10). 0
0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10, 0, 10 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

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

FORMULA

a(n)=5*[1-(-1)^n] =10*(n mod 2) - Paolo P. Lava (paoloplava(AT)gmail.com), Oct 20 2006

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

CROSSREFS

Sequence in context: A062520 A157962 A063741 * A095418 A055961 A196081

Adjacent sequences:  A010678 A010679 A010680 * A010682 A010683 A010684

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.