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A042035
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Denominators of continued fraction convergents to sqrt(541).
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2
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1, 3, 4, 23, 27, 239, 505, 2259, 2764, 7787, 26125, 33912, 60037, 694319, 10474822, 21643963, 53762748, 75406711, 129169459, 204576170, 333745629, 538321799, 872067428, 2282456655, 5436980738, 83837167725, 927645825713, 1011482993438, 1939128819151
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OFFSET
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0,2
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2723032632938454900, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
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FORMULA
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a(n) = 2723032632938454900*a(n-39) + a(n-78) for n>77. - Vincenzo Librandi, Jan 12 2014
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MATHEMATICA
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Denominator[Convergents[Sqrt[541], 50]] (* Harvey P. Dale, Sep 04 2011 *)
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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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