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A041774
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Numerators of continued fraction convergents to sqrt(408).
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2
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20, 101, 4060, 20401, 820100, 4120901, 165656140, 832401601, 33461720180, 168141002501, 6759101820220, 33963650103601, 1365305105964260, 6860489179924901, 275784872302960300, 1385784850694726401, 55707178900092016340, 279921679351154808101
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OFFSET
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0,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,202,0,-1).
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FORMULA
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G.f.: -(x+4)*(x^2-24*x-5) / (x^4-202*x^2+1). - Colin Barker, Nov 24 2013
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MATHEMATICA
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Numerator[Convergents[Sqrt[408], 30]] (* Vincenzo Librandi, Nov 08 2013 *)
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CROSSREFS
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Cf. A041775, A040387.
Sequence in context: A043462 A044271 A044652 * A043217 A039394 A043997
Adjacent sequences: A041771 A041772 A041773 * A041775 A041776 A041777
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KEYWORD
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nonn,cofr,frac,easy,less
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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More terms from Colin Barker, Nov 24 2013
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STATUS
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approved
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