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A066267
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Numbers k such that A066266(k) is prime.
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3
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OFFSET
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1,2
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COMMENTS
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LINKS
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Eric Weisstein's World of Mathematics, Primorial.
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MATHEMATICA
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t={}; Do[If[PrimeQ[Times@@Table[Times@@Prime[Range[n]], {n, k}]+1], AppendTo[t, k]], {k, 35}]; t (* Jayanta Basu, May 12 2013 *)
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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