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A021169 Decimal expansion of 1/165. 0
0, 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, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..98.

FORMULA

a(n) = 3+3*(-1)^n-6*[C(2*n,n) mod 2], with n>=0. [Paolo P. Lava, Sep 23 2009]

G.f.: 6*x^2/(1 - x^2). - Chai Wah Wu, Jun 21 2016

CROSSREFS

Sequence in context: A217221 A158090 A010677 * A303494 A198368 A064373

Adjacent sequences:  A021166 A021167 A021168 * A021170 A021171 A021172

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 21 05:32 EDT 2019. Contains 326162 sequences. (Running on oeis4.)