A021403 Decimal expansion of 1/399.

0, 0, 2, 5, 0, 6, 2, 6, 5, 6, 6, 4, 1, 6, 0, 4, 0, 1, 0, 0, 2, 5, 0, 6, 2, 6, 5, 6, 6, 4, 1, 6, 0, 4, 0, 1, 0, 0, 2, 5, 0, 6, 2, 6, 5, 6, 6, 4, 1, 6, 0, 4, 0, 1, 0, 0, 2, 5, 0, 6, 2, 6, 5, 6, 6, 4, 1, 6, 0, 4, 0, 1, 0, 0, 2, 5, 0, 6, 2, 6, 5, 6, 6, 4, 1, 6, 0, 4, 0, 1, 0, 0, 2, 5, 0, 6, 2, 6, 5

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, Aug 10 2020: (Start)

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

G.f.: x^2*(-x^7 + x^6 - 4*x^5 + 4*x^4 - 6*x^3 + 5*x^2 - 3*x - 2)/(x^10 - x^9 + x - 1). (End)

Example

0.0025062656641604010025062656641604010025062656641604...

Mathematica

First[RealDigits[1/399, 10, 100, -1]] (* Paolo Xausa, Aug 14 2025 *)

Crossrefs

Sequence in context: A268886 A388230 A090625 * A299623 A290796 A019727

Adjacent sequences: A021400 A021401 A021402 * A021404 A021405 A021406

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved