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A042017 Denominators of continued fraction convergents to sqrt(532). 2
1, 15, 31, 46, 215, 476, 2119, 2595, 7309, 112230, 5169889, 77660565, 160491019, 238151584, 1113097355, 2464346294, 10970482531, 13434828825, 37840140181, 581036931540, 26765538991021, 402064121796855, 830893782584731, 1232957904381586, 5762725400111075 (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 (0,0,0,0,0,0,0,0,0,5177198,0,0,0,0,0,0,0,0,0,-1).

FORMULA

G.f.: -(x^18 -15*x^17 +31*x^16 -46*x^15 +215*x^14 -476*x^13 +2119*x^12 -2595*x^11 +7309*x^10 -112230*x^9 -7309*x^8 -2595*x^7 -2119*x^6 -476*x^5 -215*x^4 -46*x^3 -31*x^2 -15*x -1) / (x^20 -5177198*x^10 +1). - Colin Barker, Nov 29 2013

MATHEMATICA

Denominator[Convergents[Sqrt[532], 30]] (* Vincenzo Librandi, Jan 12 2014 *)

CROSSREFS

Cf. A042016, A040508.

Sequence in context: A054305 A041442 A041440 * A043346 A023719 A031467

Adjacent sequences:  A042014 A042015 A042016 * A042018 A042019 A042020

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 29 2013

STATUS

approved

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Last modified February 21 15:29 EST 2019. Contains 320374 sequences. (Running on oeis4.)