A021059 Decimal expansion of 1/55.

0, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8

Offset

0,3

Links

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

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

Formula

Multiplicative with a(2^e) = 8, a(p^e) = 1 otherwise. - David W. Wilson, Jun 12 2005

Dirichlet g.f.: zeta(s) * (1 + 7/2^s). - Amiram Eldar, Jun 09 2025

Example

0.0181818181818181818181818...

Mathematica

RealDigits[1/55, 10, 100, -1][[1]] (* Amiram Eldar, Jun 09 2025 *)

Prog

(PARI) { default(realprecision); x=1/55*10; for(n=1, 100, d=floor(x); x=(x-d)*10; print1(d, ", ")) } \\ Felix Fröhlich, Aug 11 2014

Crossrefs

A010689 shifted right.

Sequence in context: A231929 A154460 A021554 * A010689 A070637 A070651

Adjacent sequences: A021056 A021057 A021058 * A021060 A021061 A021062

Keyword

nonn,cons,mult,easy

Author

N. J. A. Sloane

Status

approved