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A042183 Denominators of continued fraction convergents to sqrt(616). 2
1, 1, 5, 6, 11, 72, 83, 155, 703, 858, 41887, 42745, 212867, 255612, 468479, 3066486, 3534965, 6601451, 29940769, 36542220, 1783967329, 1820509549, 9066005525, 10886515074, 19952520599, 130601638668, 150554159267, 281155797935, 1275177351007, 1556333148942 (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 (0,0,0,0,0,0,0,0,0,42590,0,0,0,0,0,0,0,0,0,-1).

FORMULA

G.f.: -(x^18 - x^17 + 5*x^16 - 6*x^15 + 11*x^14 - 72*x^13 + 83*x^12 - 155*x^11 + 703*x^10 - 858*x^9 - 703*x^8 - 155*x^7 - 83*x^6 - 72*x^5 - 11*x^4 - 6*x^3 - 5*x^2 - x - 1) / (x^20 - 42590*x^10 + 1). - Colin Barker, Dec 03 2013

MATHEMATICA

Denominator[Convergents[Sqrt[616], 30]] (* Vincenzo Librandi, Jan 16 2014 *)

CROSSREFS

Cf. A042182, A040591.

Sequence in context: A041355 A041050 A041227 * A328544 A041939 A177714

Adjacent sequences:  A042180 A042181 A042182 * A042184 A042185 A042186

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Colin Barker, Dec 03 2013

STATUS

approved

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Last modified December 8 09:53 EST 2019. Contains 329862 sequences. (Running on oeis4.)