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Date: 19-1-2020
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Date: 4-1-2021
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Date: 1-12-2019
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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.
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