A041583 - OEIS

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A041583

Denominators of continued fraction convergents to sqrt(309).

2

1, 1, 2, 5, 7, 19, 83, 102, 185, 287, 2481, 15173, 17654, 191713, 209367, 1447915, 11792687, 13240602, 25033289, 38273891, 178128853, 394531597, 572660450, 1539852497, 2112512947, 3652365444, 126292938043, 129945303487, 256238241530, 642421786547

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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, 128405450990, 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) = 128405450990*a(n-26) - a(n-52) for n>51. - Vincenzo Librandi, Dec 20 2013

MATHEMATICA

Denominator[Convergents[Sqrt[309], 30]] (* Vincenzo Librandi, Dec 20 2013 *)

CROSSREFS

Sequence in context: A041387 A392303 A096146 * A143915 A355597 A309542

Adjacent sequences: A041580 A041581 A041582 * A041584 A041585 A041586

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Vincenzo Librandi, Dec 20 2013

STATUS

approved