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A115530
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Numbers k such that k^2 is the concatenation of two numbers 2*m and m.
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0
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5714285714285714286, 8571428571428571429, 11428571428571428572, 465116279069767441860465116279070, 511627906976744186046511627906977, 558139534883720930232558139534884, 604651162790697674418604651162791
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OFFSET
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1,1
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LINKS
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EXAMPLE
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5714285714285714286^2 = 3265306122448979592_1632653061224489796.
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CROSSREFS
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KEYWORD
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nonn,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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