A042699 Denominators of continued fraction convergents to sqrt(879).

1, 1, 2, 3, 17, 54, 71, 267, 605, 5712, 12029, 41799, 53828, 203283, 1070243, 1273526, 2343769, 3617295, 212146879, 215764174, 427911053, 643675227, 3646287188, 11582536791, 15228823979, 57269008728, 129766841435, 1225170581643, 2580108004721, 8965494595806

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, 214490648, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

Formula

a(n) = 214490648*a(n-18) - a(n-36) for n>35. - Vincenzo Librandi, Jan 27 2014

Mathematica

Denominator[Convergents[Sqrt[879], 30]] (* Vincenzo Librandi, Jan 27 2014 *)

Crossrefs

Cf. A040849, A042698.

Sequence in context: A383731 A051084 A106860 * A078983 A235617 A201455

Adjacent sequences: A042696 A042697 A042698 * A042700 A042701 A042702

Keyword

nonn,frac,easy

Author

N. J. A. Sloane

Extensions

More terms from Vincenzo Librandi, Jan 27 2014

Status

approved