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

Author

N. J. A. Sloane

Keywords

• nonn
• cons
• mult
• easy

Examples

			0.0181818181818181818181818...
		

Links

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

Crossrefs

A010689 shifted right.

Programs

Mathematica

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

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

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