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A042218
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Numerators of continued fraction convergents to sqrt(635).
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2
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25, 126, 6325, 31751, 1593875, 8001126, 401650175, 2016252001, 101214250225, 508087503126, 25505589406525, 128036034535751, 6427307316194075, 32264572615506126, 1619655938091500375
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OFFSET
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0,1
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LINKS
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FORMULA
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MATHEMATICA
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Numerator[Convergents[Sqrt[635], 30]] (* Harvey P. Dale, Dec 15 2012 *)
CoefficientList[Series[(25 + 126 x + 25 x^2 - x^3)/(x^4 - 252 x^2 + 1), {x, 0, 30}], x](* Vincenzo Librandi, Nov 19 2013 *)
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PROG
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(Magma) I:=[25, 126, 6325, 31751]; [n le 4 select I[n] else 252*Self(n-2)-Self(n-4): n in [1..30]]; // Vincenzo Librandi, Nov 19 2013
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CROSSREFS
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KEYWORD
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nonn,cofr,frac,easy
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AUTHOR
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STATUS
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approved
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