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On 4/n = 1/x + 1/y = 1/z
William A. Webb
Proceedings of the American Mathematical Society
Vol. 25, No. 3 (Jul., 1970), pp. 578-584
Published by: American Mathematical Society
Stable URL: http://www.jstor.org/stable/2036647
Page Count: 7
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It is shown that the number of positive integers n ≤ N for which 4/n = 1/x + 1/y + 1/z is not solvable in positive integers, is less than a constant times N/(log N)7/4.
Proceedings of the American Mathematical Society © 1970 American Mathematical Society