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A042067 Denominators of continued fraction convergents to sqrt(557). 2
1, 1, 2, 3, 5, 233, 238, 471, 709, 1180, 54989, 56169, 111158, 167327, 278485, 12977637, 13256122, 26233759, 39489881, 65723640, 3062777321, 3128500961, 6191278282, 9319779243, 15511057525, 722828425393, 738339482918, 1461167908311, 2199507391229 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 236, 0, 0, 0, 0, 1).

FORMULA

G.f.: -(x^4-3*x^3+4*x^2-2*x+1)*(x^4+2*x^3+4*x^2+3*x+1) / (x^10+236*x^5-1). - Colin Barker, Dec 01 2013

MATHEMATICA

Denominator[Convergents[Sqrt[557], 30]] (* Vincenzo Librandi, Jan 13 2014 *)

CROSSREFS

Cf. A042066, A040533.

Sequence in context: A062597 A038526 A082755 * A042579 A033090 A303371

Adjacent sequences:  A042064 A042065 A042066 * A042068 A042069 A042070

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 01 2013

STATUS

approved

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Last modified February 25 12:01 EST 2020. Contains 332233 sequences. (Running on oeis4.)