Pandigital Fraction

 A fraction containing each of the digits 1 through 9 is called a pandigital fraction. The following table gives the number of pandigital fractions which represent simple unit fractions. The numbers of pandigital fractions for 1/1, 1/2, 1/3, ... are 0, 12, 2, 4, 12, 3, 7, 46, 3, ... (OEIS A054383).

	#	fractions
	12	,
	2
	4
	12	,
	3
	7	,
	46	,
		,
		,
		,
		,
		,
		,
	3
	0
	0
	4

REFERENCES:

Friedman, M. J. Scripta Math. 8.

Sloane, N. J. A. Sequence A054383 in "The On-Line Encyclopedia of Integer Sequences."

Wells, D. The Penguin Dictionary of Curious and Interesting Numbers. Middlesex, England: Penguin Books, pp. 27-28, 1986.