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 A174753 x-values in the solution to x^2-43*y^2=1. 2
 1, 3482, 24248647, 168867574226, 1175993762661217, 8189620394305140962, 57032515249947238998151, 397174428011012178077982602, 2765922659636173558187831842177 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The corresponding values of y of this Pell equation are in A174780. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..200 Index entries for linear recurrences with constant coefficients, signature (6964,-1). FORMULA a(n) = 6964*a(n-1)-a(n-2) with a(1)=1, a(2)=3482. G.f.: x*(1-3482*x)/(1-6964*x+x^2). MATHEMATICA LinearRecurrence[{6964, -1}, {1, 3482}, 30] PROG (Magma) I:=[1, 3482]; [n le 2 select I[n] else 6964*Self(n-1)-Self(n-2): n in [1..20]]; CROSSREFS Cf. A174780. Sequence in context: A159215 A176380 A156773 * A031557 A031737 A268156 Adjacent sequences: A174750 A174751 A174752 * A174754 A174755 A174756 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Apr 13 2010 STATUS approved

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Last modified March 27 22:47 EDT 2023. Contains 361575 sequences. (Running on oeis4.)