

A064566


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


1



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

0,1


REFERENCES

A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pps. 7382.


LINKS

Table of n, a(n) for n=0..14.
Index entries for sequences related to decimal expansion of 1/n


FORMULA

Numbers of the form 9*2^(6i4) and 9*5^(6i2) [i>0].


EXAMPLE

E.g. 1/2304 = 0.000434027777777777...


CROSSREFS

Cf. A064560A064567.
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



