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A187819
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Numbers k such that (9^k + 8^k)/17 is prime.
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15
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3, 7, 13, 19, 307, 619, 2089, 7297, 75571, 76103, 98897
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OFFSET
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1,1
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COMMENTS
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All terms are prime.
a(12) > 10^5.
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LINKS
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MATHEMATICA
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Select[ Prime[ Range[1, 100000] ], PrimeQ[ (9^# + 8^#)/17 ]& ]
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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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STATUS
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approved
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