A064566 Reciprocal of n terminates with an infinite repetition of digit 7. Multiples of 10 are omitted.

36, 2304, 5625, 147456, 9437184, 87890625, 603979776, 38654705664, 1373291015625, 2473901162496, 158329674399744, 10133099161583616, 21457672119140625, 648518346341351424, 41505174165846491136

Offset

1,1

References

A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 73-82.

Links

Table of n, a(n) for n=1..15.

Index entries for sequences related to decimal expansion of 1/n

Formula

Numbers of the form 9*2^(6i-4) and 9*5^(6i-2) [i>0].

Example

1/2304 = 0.000434027777777777...

Crossrefs

Cf. A064560, A064561, A064562, A064563, A064564, A064565, A064567.

Sequence in context: A065782 A160482 A135626 * A230465 A120466 A202633

Adjacent sequences: A064563 A064564 A064565 * A064567 A064568 A064569

Keyword

nonn,base

Author

Patrick De Geest, Sep 20 2001

Extensions

More terms from James A. Sellers, Sep 28 2001

Status

approved