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A041632 Numerators of continued fraction convergents to sqrt(335). 2
18, 55, 183, 604, 21927, 66385, 221082, 729631, 26487798, 80193025, 267066873, 881393644, 31997238057, 96873107815, 322616561502, 1064722792321, 38652637085058, 117022634047495, 389720539227543, 1286184251730124, 46692353601512007, 141363245056266145 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 1208, 0, 0, 0, -1).

FORMULA

G.f.: -(x^7-18*x^6+55*x^5-183*x^4-604*x^3-183*x^2-55*x-18) / (x^8-1208*x^4+1). - Colin Barker, Nov 09 2013

MATHEMATICA

Numerator[Convergents[Sqrt[335], 30]] (* Vincenzo Librandi, Nov 05 2013 *)

LinearRecurrence[{0, 0, 0, 1208, 0, 0, 0, -1}, {18, 55, 183, 604, 21927, 66385, 221082, 729631}, 30] (* Harvey P. Dale, Mar 03 2020 *)

CROSSREFS

Cf. A041633.

Sequence in context: A041630 A088593 A033571 * A086540 A041634 A044975

Adjacent sequences: A041629 A041630 A041631 * A041633 A041634 A041635

KEYWORD

nonn,cofr,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 09 2013

STATUS

approved

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Last modified February 2 21:10 EST 2023. Contains 360024 sequences. (Running on oeis4.)