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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A329909 Number of different four-digit proper fractions with anomalous cancellation property in base n.

Original entry on oeis.org

0, 0, 1, 15, 36, 135, 314, 588, 1173, 1851, 2806, 3433
Offset: 2

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Author

Xiaohan Zhang, Nov 23 2019

Keywords

Comments

As in A329908, 0 digits or digits that appear different times in numerator and denominator are not cancelled.

References

  • Boas, R. P. "Anomalous Cancellation," Ch. 6 in Mathematical Plums (Ed. R. Honsberger). Washington, DC: Math. Assoc. Amer., pp. 113-129, 1979.

Links

Crossrefs

Cf. A094907 (two-digit), A329908 (three-digit).

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