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A042155 Denominators of continued fraction convergents to sqrt(602). 2
1, 1, 2, 13, 15, 28, 1359, 1387, 2746, 17863, 20609, 38472, 1867265, 1905737, 3773002, 24543749, 28316751, 52860500, 2565620751, 2618481251, 5184102002, 33723093263, 38907195265, 72630288528, 3525161044609, 3597791333137, 7122952377746, 46335505599613 (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 (0,0,0,0,0,1374,0,0,0,0,0,-1).

FORMULA

G.f.: -(x^2-2*x-1)*(x^4-x^3+2*x^2+x+1)*(x^4+2*x^3+5*x^2-2*x+1) / (x^12-1374*x^6+1). - Colin Barker, Nov 19 2013

MATHEMATICA

Denominator[Convergents[Sqrt[602], 30]] (* Vincenzo Librandi, Jan 15 2014 *)

CROSSREFS

Cf. A042154, A040577.

Sequence in context: A356102 A022116 A041201 * A295336 A042253 A041645

Adjacent sequences:  A042152 A042153 A042154 * A042156 A042157 A042158

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 19 2013

STATUS

approved

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Last modified September 29 09:23 EDT 2022. Contains 357088 sequences. (Running on oeis4.)