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A021337 Decimal expansion of 1/333. 3
0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3, 0, 0, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

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

FORMULA

a(n) = (1/3)*{4*(n mod 3)-2*[(n+1) mod 3]+[(n+2) mod 3]}. [Paolo P. Lava, Nov 10 2009]

G.f.: 3*x^2/(1 - x^3). - Chai Wah Wu, Jun 21 2016

From Wesley Ivan Hurt, Jul 02 2016: (Start)

a(n) = a(n-3) for n>2.

a(n) = 1 - cos(2*n*Pi/3) - sqrt(3)*sin(2*n*Pi/3).

a(n) = 3*(1 - sgn((n+1) mod 3)).

a(n) = 1 + (n mod 3) - ((n+1) mod 3). (End)

MAPLE

seq(op([0, 0, 3]), n=0..50); # Wesley Ivan Hurt, Jul 02 2016

MATHEMATICA

PadLeft[First@#, Abs@Last@# + Length@First@#]&@RealDigits[N[1/333, 100]] (* Vincenzo Librandi, Jun 22 2016 *)

PadRight[{}, 100, {0, 0, 3}] (* Wesley Ivan Hurt, Jul 02 2016 *)

PROG

(MAGMA) &cat [[0, 0, 3]^^30]; // Wesley Ivan Hurt, Jul 02 2016

CROSSREFS

Sequence in context: A112883 A117138 A095104 * A033685 A272974 A063691

Adjacent sequences:  A021334 A021335 A021336 * A021338 A021339 A021340

KEYWORD

nonn,cons,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified September 25 16:57 EDT 2016. Contains 276540 sequences.