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A042485
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Denominators of continued fraction convergents to sqrt(770).
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2
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1, 1, 3, 4, 219, 223, 665, 888, 48617, 49505, 147627, 197132, 10792755, 10989887, 32772529, 43762416, 2395942993, 2439705409, 7275353811, 9715059220, 531888551691, 541603610911, 1615095773513, 2156699384424, 118076862532409, 120233561916833, 358543986366075
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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 +4*x^2 +1) / (x^8 -222*x^4 +1). - Colin Barker, Dec 15 2013
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MATHEMATICA
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PROG
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(Magma) I:=[1, 1, 3, 4, 219, 223, 665, 888]; [n le 8 select I[n] else 222*Self(n-4)-Self(n-8): n in [1..40]]; // Vincenzo Librandi, Dec 15 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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