A021022 Decimal expansion of 1/18.

0, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5

Offset

0,2

Links

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

Hideyuki Ohtsuka, Problem B-1174, Elementary Problems and Solutions, Fibonacci Quart. 54 (2016), no. 3, p. 273.

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

Formula

Equals -Sum_{n>=3} (-1)^n/(Fibonacci(n)^4-1). - Michel Marcus, May 14 2021

From Elmo R. Oliveira, Aug 05 2024: (Start)

G.f.: 5*x/(1-x).

E.g.f.: 5*(exp(x) - 1).

a(n) = 5 for n >= 1. (End)

Example

0.05555555555555555555555555555555555555555555555555...

Mathematica

PadRight[{0}, 100, 5] (* Paolo Xausa, Nov 24 2024 *)

Crossrefs

Cf. A010716, A244855.

Sequence in context: A112110 A142864 A098598 * A010716 A032560 A341028

Adjacent sequences: A021019 A021020 A021021 * A021023 A021024 A021025

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved