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A041987 Denominators of continued fraction convergents to sqrt(516). 2
1, 1, 3, 4, 7, 102, 109, 211, 531, 742, 33179, 33921, 101021, 134942, 235963, 3438424, 3674387, 7112811, 17900009, 25012820, 1118464089, 1143476909, 3405417907, 4548894816, 7954312723, 115909272938, 123863585661, 239772858599, 603409302859, 843182161458 (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 (0,0,0,0,0,0,0,0,0,33710,0,0,0,0,0,0,0,0,0,-1).

FORMULA

G.f.: -(x^18 -x^17 +3*x^16 -4*x^15 +7*x^14 -102*x^13 +109*x^12 -211*x^11 +531*x^10 -742*x^9 -531*x^8 -211*x^7 -109*x^6 -102*x^5 -7*x^4 -4*x^3 -3*x^2 -x -1) / (x^20 -33710*x^10 +1). - Colin Barker, Nov 28 2013

MATHEMATICA

Denominator[Convergents[Sqrt[516], 30]] (* Vincenzo Librandi, Jan 11 2014 *)

CROSSREFS

Cf. A041986, A040493.

Sequence in context: A041463 A041863 A042543 * A100978 A059077 A042707

Adjacent sequences:  A041984 A041985 A041986 * A041988 A041989 A041990

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 28 2013

STATUS

approved

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Last modified March 22 10:07 EDT 2019. Contains 321421 sequences. (Running on oeis4.)