A021995 Decimal expansion of 1/991.

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

Offset

0,6

Comments

Generalization:

1/1 = sum (9^i/10^(i+1)), i >= 0,

1/91 = sum (9^i/100^(i+1)), i >= 0,

1/991 = sum (9^i/1000^(i+1)), i >= 0, (this sequence)

1/9991 = sum (9^i/10000^(i+1)), i >= 0, ... - Daniel Forgues, Oct 28 2011

Links

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

Mathematica

Join[{0, 0}, RealDigits[1/991, 10, 120][[1]]] (* Harvey P. Dale, Oct 16 2023 *)

Crossrefs

Sequence in context: A019985 A242711 A178229 * A013677 A021528 A388375

Adjacent sequences: A021992 A021993 A021994 * A021996 A021997 A021998

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved