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A037042
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2-White numbers (take power 2, sum 2-digit groups to get same number).
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16
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OFFSET
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1,3
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COMMENTS
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Also, apart from initial 0, the full list of 2-Kaprekar numbers.
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REFERENCES
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Italo Ghersi, Matematica dilettevole e curiosa, p. 190, Hoepli, Milano, 1967. [Vincenzo Librandi, Apr 22 2010]
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LINKS
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EXAMPLE
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45 is a 2-White number since 45^2 = 2025 and 20 + 25 = 45.
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CROSSREFS
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KEYWORD
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full,nonn,fini,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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