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A083103
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Second-order linear recurrence sequence with a(n) = a(n-1) + a(n-2).
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5
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1786772701928802632268715130455793, 1059683225053915111058165141686995, 2846455926982717743326880272142788, 3906139152036632854385045413829783, 6752595079019350597711925685972571, 10658734231055983452096971099802354
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OFFSET
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0,1
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COMMENTS
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a(0) = 1786772701928802632268715130455793, a(1) = 1059683225053915111058165141686995. This is the second-order linear recurrence sequence with a(0) and a(1) coprime that R. L. Graham in 1964 stated did not contain any primes. It has not been verified. Graham made a mistake in the calculation that was corrected by D. E. Knuth in 1990.
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REFERENCES
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P. Ribenboim, The Little Book of Big Primes. Springer-Verlag, 1991, p. 178.
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LINKS
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FORMULA
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G.f.: (1786772701928802632268715130455793-727089476874887521210549988768798*x)/(1-x-x^2). [Colin Barker, Jun 19 2012]
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MATHEMATICA
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LinearRecurrence[{1, 1}, {1786772701928802632268715130455793, 1059683225053915111058165141686995}, 70] (* Harvey P. Dale, Oct 17 2011 *)
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CROSSREFS
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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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