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A042055 Denominators of continued fraction convergents to sqrt(551). 2
1, 2, 17, 19, 169, 357, 16591, 33539, 284903, 318442, 2832439, 5983320, 278065159, 562113638, 4774974263, 5337087901, 47471677471, 100280442843, 4660372048249, 9421024539341, 80028568362977, 89449592902318, 795625311581521, 1680700216065360 (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, 16760, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^10-2*x^9+17*x^8-19*x^7+169*x^6-357*x^5-169*x^4-19*x^3-17*x^2-2*x-1) / (x^12-16760*x^6+1). - Colin Barker, Nov 30 2013

MATHEMATICA

Denominator[Convergents[Sqrt[551], 30]] (* Vincenzo Librandi, Jan 13 2014 *)

CROSSREFS

Cf. A042054, A040527.

Sequence in context: A040138 A240475 A107139 * A075683 A309055 A157191

Adjacent sequences:  A042052 A042053 A042054 * A042056 A042057 A042058

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 30 2013

STATUS

approved

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Last modified October 15 12:23 EDT 2019. Contains 328026 sequences. (Running on oeis4.)