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A114763
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a(n) = floor(sqrt(5)*10^n)^2.
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10
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4, 484, 49729, 4999696, 499969600, 49999643236, 4999995628489, 499999965341041, 49999999664599209, 4999999997764872529, 499999999955372691076, 49999999999562191467001, 4999999999996468370295001, 499999999999959886546350009, 49999999999999566363399000484
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OFFSET
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0,1
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COMMENTS
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Largest square < 5*10^(2n).
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LINKS
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EXAMPLE
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a(1) = floor(sqrt(5)*10)^2 = 22^2 = 484.
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MATHEMATICA
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With[{c=Sqrt[5]}, (Floor[c 10^#])^2&/@Range[0, 30]] (* Harvey P. Dale, Feb 27 2011 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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