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A041753
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Denominators of continued fraction convergents to sqrt(396).
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2
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1, 1, 9, 10, 389, 399, 3581, 3980, 154821, 158801, 1425229, 1584030, 61618369, 63202399, 567237561, 630439960, 24523956041, 25154396001, 225759124049, 250913520050, 9760472885949, 10011386405999, 89851564133941, 99862950539940, 3884643684651661
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OFFSET
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0,3
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LINKS
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FORMULA
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G.f.: -(x^2-x-1)*(x^4+10*x^2+1) / ((x^4-20*x^2+1)*(x^4+20*x^2+1)). - Colin Barker, Nov 23 2013
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MATHEMATICA
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PROG
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(Magma) I:=[1, 1, 9, 10, 389, 399, 3581, 3980]; [n le 8 select I[n] else 398*Self(n-4)-Self(n-8): n in [1..40]]; // Vincenzo Librandi, Dec 24 2013
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CROSSREFS
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KEYWORD
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nonn,frac,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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