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A163115
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Primes of the form 2^n + 2*n + 1.
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6
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OFFSET
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1,1
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COMMENTS
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The corresponding values of n, i.e., 0, 1, 5, 13, 65, 85, 229, ... are of the form A192764() - 1. - Juri-Stepan Gerasimov, Jul 25 2011
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LINKS
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EXAMPLE
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a(1) = 2^0 + 2*0 + 1 = 2.
a(2) = 2^1 + 2*1 + 1 = 5.
a(3) = 2^5 + 2*5 + 1 = 43.
a(4) = 2^13 + 2*13 + 1 = 8219.
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MATHEMATICA
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Select[Table[2^n+2n+1, {n, 0, 300}], PrimeQ] (* Harvey P. Dale, Dec 17 2013 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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