A021993 Decimal expansion of 1/989.

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

Offset

0,8

Comments

Contribution from Mark Dols, May 24 2010: (Start)

Infinite sum of 1/990^n with n>0. Decimal representation of sequence A000931(excluding first 3 terms):

0.001

0.0000

0.00001

0.000001

0.0000001

0.00000002

0.000000002

0.0000000003

0.00000000004

0.000000000005

...............

--------------- +

0.001011122345..

Fraction 1/1099 for sequence in reverse. (End)

Generalization:

1/89 = sum (11^i/100^(i+1)), i >= 0,

1/989 = sum (11^i/1000^(i+1)), i >= 0, (this sequence)

1/9989 = sum (11^i/10000^(i+1)), i >= 0, ... - Daniel Forgues, Oct 28 2011

Links

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

Crossrefs

Cf. A000931.

Sequence in context: A378286 A175306 A359348 * A324743 A240011 A211228

Adjacent sequences: A021990 A021991 A021992 * A021994 A021995 A021996

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved