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A217385
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Numbers n such that 9^n + 8 is prime.
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1
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1, 2, 4, 7, 10, 19, 22, 44, 62, 76, 122, 2191, 3134, 9244, 40999, 48230
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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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MATHEMATICA
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Select[Range[5000], PrimeQ[9^# + 8] &]
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PROG
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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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