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A042497 Denominators of continued fraction convergents to sqrt(776). 2
1, 1, 6, 7, 384, 391, 2339, 2730, 149759, 152489, 912204, 1064693, 58405626, 59470319, 355757221, 415227540, 22778044381, 23193271921, 138744403986, 161937675907, 8883378902964, 9045316578871, 54109961797319, 63155278376190, 3464494994111579 (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, 390, 0, 0, 0, -1).

FORMULA

G.f.: -(x^2-x-1)*(x^4+7*x^2+1) / (x^8-390*x^4+1). - Colin Barker, Dec 16 2013

MATHEMATICA

Denominator[Convergents[Sqrt[776], 30]] (* Vincenzo Librandi, Jan 23 2014 *)

CROSSREFS

Cf. A042496, A040748.

Sequence in context: A267255 A041357 A041829 * A011315 A268508 A021151

Adjacent sequences:  A042494 A042495 A042496 * A042498 A042499 A042500

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 16 2013

STATUS

approved

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Last modified November 15 10:08 EST 2018. Contains 317233 sequences. (Running on oeis4.)