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A042147 Denominators of continued fraction convergents to sqrt(598). 2
1, 2, 9, 11, 174, 359, 5559, 5918, 29231, 64380, 3119471, 6303322, 28332759, 34636081, 547873974, 1130384029, 17503634409, 18634018438, 92039708161, 202713434760, 9822284576641, 19847282588042, 89211414928809, 109058697516851, 1725091877681574 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,3148702,0,0,0,0,0,0,0,0,0,-1).

FORMULA

G.f.: -(x^18 -2*x^17 +9*x^16 -11*x^15 +174*x^14 -359*x^13 +5559*x^12 -5918*x^11 +29231*x^10 -64380*x^9 -29231*x^8 -5918*x^7 -5559*x^6 -359*x^5 -174*x^4 -11*x^3 -9*x^2 -2*x -1) / (x^20 -3148702*x^10 +1). - Colin Barker, Dec 02 2013

MATHEMATICA

Denominator[Convergents[Sqrt[598], 30]] (* Vincenzo Librandi, Jan 15 2014 *)

CROSSREFS

Cf. A042146, A040573.

Sequence in context: A042687 A083159 A041335 * A090517 A092191 A030376

Adjacent sequences:  A042144 A042145 A042146 * A042148 A042149 A042150

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 02 2013

STATUS

approved

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Last modified July 6 02:58 EDT 2022. Contains 355108 sequences. (Running on oeis4.)