A021499 Decimal expansion of 1/495.

0, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0

Offset

0,3

Comments

0, then repeat 0, 2. [Arkadiusz Wesolowski, Jul 22 2011]

Links

Table of n, a(n) for n=0..85.

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

Formula

a(n) = 1 + (-1)^n - 2*0^n = (-1 - A033999(n))*A062157(n). [Arkadiusz Wesolowski, Jul 22 2011]

G.f.: 2*x^2/(1-x^2). - Bruno Berselli, Jul 22 2011

Mathematica

Join[{0, 0}, RealDigits[1/495, 10, 120][[1]]] (* or *) PadRight[{0}, 120, {2, 0}] (* Harvey P. Dale, Dec 13 2020 *)

Crossrefs

Sequence in context: A277162 A230103 A267602 * A176742 A010673 A084099

Adjacent sequences: A021496 A021497 A021498 * A021500 A021501 A021502

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved