A041731 Denominators of continued fraction convergents to sqrt(385).

1, 1, 2, 3, 5, 8, 29, 37, 103, 140, 523, 663, 1186, 1849, 3035, 4884, 188627, 193511, 382138, 575649, 957787, 1533436, 5558095, 7091531, 19741157, 26832688, 100239221, 127071909, 227311130, 354383039, 581694169, 936077208, 36152628073, 37088705281

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, 191662, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

Formula

a(n) = 191662*a(n-16) - a(n-32) for n>31. - Vincenzo Librandi, Dec 23 2013

Mathematica

Denominator[Convergents[Sqrt[385], 30]] (* Harvey P. Dale, Nov 08 2011 *)

Crossrefs

Cf. A041730.

Sequence in context: A191425 A155881 A318763 * A041331 A290033 A004091

Adjacent sequences: A041728 A041729 A041730 * A041732 A041733 A041734

Keyword

nonn,frac,easy

Author

N. J. A. Sloane

Extensions

More terms from Vincenzo Librandi, Dec 23 2013

Status

approved