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A154873
Numbers n such that n^5 contains every digit exactly 3 times.
3
643905, 680061, 720558, 775113, 840501, 878613, 984927
OFFSET
1,1
COMMENTS
a(5) is also the number of A074205
EXAMPLE
840501^5=419460598737334268928156702501, which contains exactly 3 times of each digit 0-9. Total 7 terms
MATHEMATICA
Select[Range[630972, 999978], Union[DigitCount[#^5]]=={3}&] (* Harvey P. Dale, May 01 2021 *)
KEYWORD
base,easy,full,nonn,fini
AUTHOR
Zhining Yang, Jan 16 2009
STATUS
approved