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A136882
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Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 5.
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1
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0, 2, 5, 20, 45, 50, 55, 200, 205, 235, 450, 452, 500, 502, 505, 550, 2000, 2005, 2050, 2055, 2245, 2335, 2350, 4500, 4520, 5000, 5002, 5005, 5020, 5045, 5050, 5055, 5500, 5505, 20000, 20005, 20050, 20055, 20500, 20502, 20505, 20550, 22450, 23245, 23335, 23350, 23500, 23502, 45000, 45005, 45200, 45305, 50000, 50002, 50005, 50020, 50045, 50050, 50055
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OFFSET
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1,2
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COMMENTS
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Generated with DrScheme.
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LINKS
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EXAMPLE
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5043245235^2 = 25434322500350205225.
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MATHEMATICA
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With[{c={0, 2, 3, 4, 5}}, Select[FromDigits/@Tuples[c, 5], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, May 25 2019 *)
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CROSSREFS
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KEYWORD
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base,nonn,changed
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AUTHOR
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Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
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STATUS
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approved
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