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A042819 Denominators of continued fraction convergents to sqrt(940). 2
1, 1, 2, 3, 44, 47, 91, 138, 8371, 8509, 16880, 25389, 372326, 397715, 770041, 1167756, 70835401, 72003157, 142838558, 214841715, 3150622568, 3365464283, 6516086851, 9881551134, 599409154891, 609290706025, 1208699860916, 1817990566941, 26660567798090 (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, 8462, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^2-x-1)*(x^4+3*x^2+1)*(x^8+46*x^4+1) / ((x^8-92*x^4+1)*(x^8+92*x^4+1)). - Colin Barker, Dec 24 2013

MATHEMATICA

Denominator[Convergents[Sqrt[940], 30]] (* Vincenzo Librandi, Jan 30 2014 *)

CROSSREFS

Cf. A042818, A040909.

Sequence in context: A230061 A100015 A317672 * A218002 A255969 A239850

Adjacent sequences:  A042816 A042817 A042818 * A042820 A042821 A042822

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 24 2013

STATUS

approved

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Last modified September 20 03:55 EDT 2019. Contains 327212 sequences. (Running on oeis4.)