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A042885 Denominators of continued fraction convergents to sqrt(974). 2
1, 4, 5, 19, 24, 43, 67, 780, 847, 5015, 15892, 132151, 148043, 280194, 428237, 708431, 21681167, 22389598, 44070765, 66460363, 110531128, 950709387, 2962659289, 15764005832, 18726665121, 221757322163, 240483987284, 462241309447, 702725296731, 2570417199640 (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, 977651490470430, 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) = 977651490470430*a(n-32) - a(n-64) for n>63. - Vincenzo Librandi, Jan 31 2014

MATHEMATICA

Denominator[Convergents[Sqrt[974], 30]] (* Harvey P. Dale, Feb 07 2012 *)

CROSSREFS

Cf. A042884, A040942.

Sequence in context: A317378 A234143 A217686 * A042085 A136211 A041036

Adjacent sequences:  A042882 A042883 A042884 * A042886 A042887 A042888

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 31 2014

STATUS

approved

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Last modified March 18 22:11 EDT 2019. Contains 321305 sequences. (Running on oeis4.)