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A059042
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Numbers k such that 2*7^k + 5 is prime.
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0
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0, 1, 2, 3, 5, 9, 11, 15, 33, 38, 239, 419, 441, 486, 5127, 6953, 6998
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OFFSET
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1,3
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COMMENTS
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LINKS
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MATHEMATICA
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Do[ If[ PrimeQ[ 2*7^n + 5 ], Print[n] ], {n, 0, 6850} ]
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PROG
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CROSSREFS
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KEYWORD
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nonn,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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