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A228538 y-values in the solution to the Pell equation x^2 - 58*y^2 = -1. 2
13, 509665, 19981925977, 783411389344597, 30714426910662344005, 1204189820676016469715433, 47211466078709474801000922193, 1850972737877693848372025685783325, 72569237114021398940564164235820117757, 2845149508441350228986064774657537850997617 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All terms are multiples of 13.

LINKS

Colin Barker, Table of n, a(n) for n = 1..200

Index entries for linear recurrences with constant coefficients, signature (39206,-1).

FORMULA

a(n) = 39206*a(n-1)-a(n-2).

G.f.: -13*x*(x-1) / (x^2-39206*x+1).

PROG

(PARI) Vec(-13*x*(x-1)/(x^2-39206*x+1) + O(x^50))

CROSSREFS

Cf. A228537 gives the corresponding x-values.

Sequence in context: A274229 A013798 A055324 * A055313 A128669 A013866

Adjacent sequences:  A228535 A228536 A228537 * A228539 A228540 A228541

KEYWORD

nonn,easy

AUTHOR

Colin Barker, Aug 24 2013

STATUS

approved

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Last modified October 17 14:31 EDT 2019. Contains 328114 sequences. (Running on oeis4.)