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A041825 Denominators of continued fraction convergents to sqrt(433). 2
1, 1, 5, 21, 47, 115, 162, 601, 7975, 8576, 16551, 25127, 41678, 566941, 1742501, 2309442, 6361385, 15032212, 66490233, 280993144, 347483377, 14180328224, 14527811601, 72291574628, 303694110113, 679679794854, 1663053699821, 2342733494675, 8691254183846 (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, 14461321368, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).

FORMULA

a(n) = 14461321368*a(n-21) + a(n-42) for n>41. - Vincenzo Librandi, Dec 25 2013

MATHEMATICA

Denominator/@Convergents[Sqrt[433], 30]  (* Harvey P. Dale, Apr 04 2011 *)

CROSSREFS

Cf. A041824.

Sequence in context: A166010 A146846 A296200 * A022268 A201279 A146721

Adjacent sequences:  A041822 A041823 A041824 * A041826 A041827 A041828

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Dec 25 2013

STATUS

approved

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Last modified January 21 05:23 EST 2020. Contains 331104 sequences. (Running on oeis4.)