A022002 Decimal expansion of 1/998.

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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

Generalization:

1/8 = sum (2^i/10^(i+1)), i >= 0,

1/98 = sum (2^i/100^(i+1)), i >= 0,

1/998 = sum (2^i/1000^(i+1)), i >= 0, (this sequence)

1/9998 = sum (2^i/10000^(i+1)), i >= 0, ... - Daniel Forgues, Oct 28 2011

Links

• Mario Raso, Integer Sequences in Cryptography: A New Generalized Family and its Application, Ph. D. Thesis, Sapienza University of Rome (Italy 2025). See p. 9.

Crossrefs

Cf. A020821 (1/8), , A021102 (1/98), A236799 (1/9998).