

A329909


Number of different fourdigit proper fractions with anomalous cancellation property in base n.


0



0, 0, 1, 15, 36, 135, 314, 588, 1173, 1851, 2806, 3433
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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. 113129, 1979.


LINKS

Table of n, a(n) for n=2..13.
Eric Weisstein's World of Mathematics, Anomalous Cancellation


CROSSREFS

Cf. A094907 (twodigit), A329908 (threedigit).
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



