A042234 Numerators of continued fraction convergents to sqrt(643).

25, 51, 76, 279, 355, 5959, 48027, 102013, 150040, 252053, 1410305, 35509678, 178958695, 214468373, 393427068, 1001322509, 8404007140, 135465436749, 143869443889, 567073768416, 710943212305, 1988960193026

Offset

0,1

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, 3977920386052, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

Mathematica

Numerator[Convergents[Sqrt[643], 30]] (* Vincenzo Librandi, Nov 19 2013 *)

Crossrefs

Cf. A042235.

Sequence in context: A253017 A042236 A042238 * A042232 A273868 A338079

Adjacent sequences: A042231 A042232 A042233 * A042235 A042236 A042237

Keyword

nonn,cofr,frac,easy

Author

N. J. A. Sloane

Status

approved