A041777 Denominators of continued fraction convergents to sqrt(409).

1, 4, 9, 67, 76, 143, 219, 1019, 2257, 5533, 74186, 969951, 2014088, 4998127, 22006596, 27004723, 49011319, 76016042, 581123613, 1238263268, 5534176685, 222605330668, 895955499357, 2014516329382, 14997569805031, 17012086134413, 32009655939444

Offset

0,2

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, 223843593936, 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[409], 30]] (* Vincenzo Librandi, Dec 24 2013 *)

Crossrefs

Cf. A041776.

Sequence in context: A069020 A220189 A122956 * A367276 A100517 A327579

Adjacent sequences: A041774 A041775 A041776 * A041778 A041779 A041780

Keyword

nonn,frac,easy

Author

N. J. A. Sloane.

Extensions

More terms from Vincenzo Librandi, Dec 24 2013

Status

approved