A021985 Decimal expansion of 1/981.

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

Offset

0,6

Comments

Generalization:

1/81 = Sum_{i >= 0} 19^i/100^(i+1),

1/981 = Sum_{i >= 0} 19^i/1000^(i+1), (this sequence)

1/9981 = Sum_{i >= 0} 19^i/10000^(i+1). - Daniel Forgues, Oct 28 2011

Links

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

Example

0.0010193679918450560652395514780835881753312945973496...

Mathematica

First[RealDigits[1/981, 10, 100, -1]] (* Paolo Xausa, Sep 22 2025 *)

Crossrefs

Cf. A021085 (1/81).

Sequence in context: A388246 A182552 A388952 * A309602 A197832 A154688

Adjacent sequences: A021982 A021983 A021984 * A021986 A021987 A021988

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved