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A042719 Denominators of continued fraction convergents to sqrt(889). 2
1, 1, 5, 11, 38, 49, 87, 1006, 2099, 3105, 11414, 219971, 231385, 451356, 682741, 1134097, 7487323, 8621420, 50594423, 59215843, 228241952, 1885151459, 5883696329, 7768847788, 44727935269, 52496783057, 359708633611, 412205416668, 771914050279 (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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 26463949435607314430, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 26463949435607314430*a(n-42) - a(n-84) for n>83. - Vincenzo Librandi, Jan 27 2014

MATHEMATICA

Denominator[Convergents[Sqrt[889], 30]] (* Vincenzo Librandi, Jan 27 2014 *)

CROSSREFS

Cf. A040859, A042718.

Sequence in context: A205719 A139515 A038708 * A045717 A197337 A302766

Adjacent sequences:  A042716 A042717 A042718 * A042720 A042721 A042722

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 27 2014

STATUS

approved

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Last modified February 22 19:56 EST 2019. Contains 320403 sequences. (Running on oeis4.)