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A136991
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Numbers k such that k and k^2 use only the digits 1, 2, 4, 5 and 9.
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1
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1, 2, 5, 11, 12, 15, 21, 112, 211, 212, 229, 1515, 4415, 4421, 95512, 119229, 119415, 145415, 221911, 222511, 222515, 222521, 442212, 459521, 491421, 494211, 494421, 494511, 499229, 499521, 1222515, 1245911, 1594415, 2119415, 4942212, 4944211, 4951911, 4955229, 4991515, 4994421, 4995212, 11145511, 11155515, 11925415, 12212511
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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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492149521242421^2 = 242211151259144199119449941241.
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CROSSREFS
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KEYWORD
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base,nonn
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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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