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A042565 Denominators of continued fraction convergents to sqrt(811). 2
1, 2, 21, 23, 205, 228, 433, 1094, 1527, 2621, 4148, 15065, 94538, 1716749, 1811287, 8961897, 10773184, 30508265, 41281449, 1145107388, 1186388837, 3517885062, 4704273899, 22334980658, 27039254557, 509041562684, 3081288630661, 9752907454667, 12834196085328 (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, 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, 2764144327157232820, 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) = 2764144327157232820*a(n-38) - a(n-76) for n>75. - Vincenzo Librandi, Jan 25 2014

MATHEMATICA

Denominator[Convergents[Sqrt[811], 30]] (* Vincenzo Librandi, Jan 25 2014 *)

CROSSREFS

Cf. A040782, A042564.

Sequence in context: A294116 A041513 A135053 * A079907 A075715 A326735

Adjacent sequences:  A042562 A042563 A042564 * A042566 A042567 A042568

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 25 2014

STATUS

approved

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Last modified August 3 20:08 EDT 2020. Contains 336201 sequences. (Running on oeis4.)