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A174754 x-values in the solution to x^2-46*y^2=1. 2
1, 24335, 1184384449, 57643991108495, 2805533046066067201, 136545293294391499564175, 6645659421832501237722330049, 323444243924042541945554303920655 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The corresponding values of y of this Pell equation are in A174851.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..200

Index entries for linear recurrences with constant coefficients, signature (48670,-1).

FORMULA

a(n) = 48670*a(n-1)-a(n-2) with a(1)=1, a(2)=24335.

G.f.: x*(1-24335*x)/(1-48670*x+x^2).

MATHEMATICA

LinearRecurrence[{48670, -1}, {1, 24335}, 30]

PROG

(MAGMA)I:=[1, 24335]; [n le 2 select I[n] else 48670*Self(n-1)-Self(n-2): n in [1..20]];

CROSSREFS

Cf. A174851.

Sequence in context: A025041 A156843 A156844 * A206682 A083621 A083622

Adjacent sequences:  A174751 A174752 A174753 * A174755 A174756 A174757

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Apr 13 2010

STATUS

approved

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Last modified May 8 07:02 EDT 2021. Contains 343653 sequences. (Running on oeis4.)