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A041789 Denominators of continued fraction convergents to sqrt(415). 2
1, 2, 3, 8, 35, 218, 253, 471, 1666, 2137, 3803, 24955, 103623, 232201, 335824, 903849, 36489784, 73883417, 110373201, 294629819, 1288892477, 8027984681, 9316877158, 17344861839, 61351462675, 78696324514, 140047787189, 918983047648, 3815979977781 (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, 36825608, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 36825608*a(n-16) - a(n-32) for n>31. - Vincenzo Librandi, Dec 24 2013

MATHEMATICA

Denominator/@Convergents[Sqrt[415], 30]  (* Harvey P. Dale, Apr 22 2011 *)

CROSSREFS

Cf. A041788.

Sequence in context: A112866 A041657 A191274 * A174899 A201370 A233532

Adjacent sequences:  A041786 A041787 A041788 * A041790 A041791 A041792

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Dec 24 2013

STATUS

approved

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Last modified February 22 23:14 EST 2020. Contains 332157 sequences. (Running on oeis4.)