A042890 Numerators of continued fraction convergents to sqrt(977).

31, 94, 125, 1094, 5595, 6689, 12284, 43541, 317071, 360612, 677683, 5104393, 15990862, 21095255, 37086117, 206525840, 1689292837, 1895818677, 7376748868, 459254248493, 1385139494347, 1844393742840

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, 14753497736, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).

Formula

a(n) = 14753497736*a(n-19) - a(n-38) for n > 37. [Bruno Berselli, Dec 08 2013]

Mathematica

Numerator[Convergents[Sqrt[977], 30]] (* Vincenzo Librandi, Dec 08 2013 *)

Crossrefs

Cf. A042891.

Sequence in context: A061155 A098440 A042892 * A042894 A042896 A042898

Adjacent sequences: A042887 A042888 A042889 * A042891 A042892 A042893

Keyword

nonn,cofr,frac,easy

Author

N. J. A. Sloane

Status

approved