A042189 Denominators of continued fraction convergents to sqrt(619).

1, 1, 8, 25, 133, 557, 690, 2627, 3317, 9261, 12578, 21839, 209129, 440097, 649226, 1089323, 1738549, 27167558, 28906107, 692008019, 720914126, 11505719909, 12226634035, 23732353944, 35958987979, 95650329902, 896811957097, 992462286999, 1889274244096

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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1034427021106565860, 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, 0, 0, 0, 0, 0, 0, -1).

Mathematica

Denominator[Convergents[Sqrt[619], 30]] (* Vincenzo Librandi, Jan 16 2014 *)

Crossrefs

Cf. A042188.

Sequence in context: A253237 A275151 A302617 * A305680 A316927 A004246

Adjacent sequences: A042186 A042187 A042188 * A042190 A042191 A042192

Keyword

nonn,frac,easy

Author

N. J. A. Sloane

Extensions

More terms from Vincenzo Librandi, Jan 16 2014

Status

approved