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A042202
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Numerators of continued fraction convergents to sqrt(627).
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2
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25, 626, 31325, 783751, 39218875, 981255626, 49102000175, 1228531260001, 61475665000225, 1538120156265626, 76967483478281525, 1925725207113303751, 96363227839143469075, 2411006421185700030626, 120646684287124145000375
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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[627], 20]] (* Harvey P. Dale, Oct 20 2012 *)
CoefficientList[Series[(25 + 626 x + 25 x^2 - x^3)/(x^4 - 1252 x^2 + 1), {x, 0, 20}], x] (* Vincenzo Librandi, Nov 19 2013 *)
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PROG
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(Magma) I:=[25, 626, 31325, 783751]; [n le 4 select I[n] else 1252*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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