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A228544
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x-values in the solution to the Pell equation x^2 - 61*y^2 = -1.
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2
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29718, 104982939026082, 370866730043548288842318, 1310137939832519884162097942405082, 4628243199887591481762707268904054133171718, 16349908254732334984625073953919472453334678640507282, 57758308799472135354556537295795833330948905641138816306457918
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OFFSET
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1,1
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COMMENTS
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All terms are multiples of 29718.
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LINKS
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FORMULA
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a(n) = 3532638098*a(n-1)-a(n-2).
G.f.: 29718*x*(x+1) / (x^2-3532638098*x+1).
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PROG
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(PARI) Vec(29718*x*(x+1)/(x^2-3532638098*x+1) + O(x^20))
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CROSSREFS
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Cf. A228545 gives the corresponding y-values.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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