A021213 Decimal expansion of 1/209.

0, 0, 4, 7, 8, 4, 6, 8, 8, 9, 9, 5, 2, 1, 5, 3, 1, 1, 0, 0, 4, 7, 8, 4, 6, 8, 8, 9, 9, 5, 2, 1, 5, 3, 1, 1, 0, 0, 4, 7, 8, 4, 6, 8, 8, 9, 9, 5, 2, 1, 5, 3, 1, 1, 0, 0, 4, 7, 8, 4, 6, 8, 8, 9, 9, 5, 2, 1, 5, 3, 1, 1, 0, 0, 4, 7, 8, 4, 6, 8, 8, 9, 9, 5, 2, 1, 5, 3, 1, 1, 0, 0, 4, 7, 8, 4, 6, 8, 8

Offset

0,3

Links

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

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

Formula

From Chai Wah Wu, Mar 11 2021: (Start)

a(n) = a(n-1) - a(n-9) + a(n-10) for n > 9.

G.f.: x^2*(-x^7 - 2*x^5 - 2*x^4 + 4*x^3 - x^2 - 3*x - 4)/(x^10 - x^9 + x - 1). (End)

Mathematica

Join[{0, 0}, RealDigits[1/209, 10, 120][[1]]] (* Harvey P. Dale, Aug 20 2014 *)

Crossrefs

Sequence in context: A318383 A151958 A176778 * A154687 A115021 A200367

Adjacent sequences: A021210 A021211 A021212 * A021214 A021215 A021216

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved