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A010677 Period 2: repeat (0,6). 2
0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..80.

Index entries for linear recurrences with constant coefficients, signature (0,1).

FORMULA

a(n)=3*[1-(-1)^n] =6*(n mod 2) - Paolo P. Lava, Oct 20 2006

G.f. 6x/((1-x)(1+x)). - R. J. Mathar, Nov 21 2011

PROG

(PARI) a(n)=n%2*6 \\ Charles R Greathouse IV, Jul 13 2016

CROSSREFS

Sequence in context: A280508 A217221 A158090 * A021169 A303494 A198368

Adjacent sequences:  A010674 A010675 A010676 * A010678 A010679 A010680

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 17 22:21 EDT 2019. Contains 328134 sequences. (Running on oeis4.)