A021670 Decimal expansion of 1/666.

0, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1, 5, 0, 1

Offset

0,4

Links

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

Burkard Polster, Juggling, maths and a beautiful mind

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

Mathematica

Join[{0, 0}, RealDigits[1/666, 10, 120][[1]]] (* or *) PadRight[{0, 0, 1}, 111, {5, 0, 1}] (* Harvey P. Dale, Oct 17 2011 *)

Prog

(PARI) a(n)=if(n, [5, 0, 1][n%3+1], 0) \\ Charles R Greathouse IV, Jan 20 2012

Crossrefs

Sequence in context: A274619 A230844 A054672 * A060081 A197515 A326185

Adjacent sequences: A021667 A021668 A021669 * A021671 A021672 A021673

Keyword

nonn,cons,easy

Author

N. J. A. Sloane.

Status

approved