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A188574
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Numbers n such that n^2 + 2*n + 2^n is prime.
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0
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1, 3, 5, 7, 13, 15, 35, 43, 159, 245, 265, 1573, 1827, 3359, 3949, 4615, 5463, 5919, 19723
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[Range[1, 10000, 2], PrimeQ[#^2 + 2 # + 2^#] &]
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PROG
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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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