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A064566
Reciprocal of n terminates with an infinite repetition of digit 7. Multiples of 10 are omitted.
6
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.
FORMULA
Numbers of the form 9*2^(6i-4) and 9*5^(6i-2) [i>0].
EXAMPLE
1/2304 = 0.000434027777777777...
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Sep 20 2001
EXTENSIONS
More terms from James A. Sellers, Sep 28 2001
STATUS
approved