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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
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
KEYWORD
nonn,easy
AUTHOR
Colin Barker, Aug 24 2013
STATUS
approved

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Last modified June 24 02:53 EDT 2024. Contains 373661 sequences. (Running on oeis4.)