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A329909 Number of different four-digit proper fractions with anomalous cancellation property in base n. 0
0, 0, 1, 15, 36, 135, 314, 588, 1173, 1851, 2806, 3433 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,4

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

Table of n, a(n) for n=2..13.

Eric Weisstein's World of Mathematics, Anomalous Cancellation

CROSSREFS

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

Sequence in context: A166146 A229235 A293156 * A118867 A260796 A296179

Adjacent sequences:  A329906 A329907 A329908 * A329910 A329911 A329912

KEYWORD

nonn,base,more

AUTHOR

Xiaohan Zhang, Nov 23 2019

STATUS

approved

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Last modified May 18 07:26 EDT 2021. Contains 343995 sequences. (Running on oeis4.)