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A095906
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Numbers n such that 3^n-2^(n-1) is prime.
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2
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1, 2, 3, 4, 5, 9, 10, 11, 12, 16, 29, 34, 41, 61, 73, 186, 191, 241, 282, 1075, 1404, 1991, 2116, 3399, 3935, 4924, 5353, 7660, 8645, 11832, 16029, 17370, 19182, 22386, 27295, 30570, 41125, 61498, 64786, 72820, 90221, 122506, 132570, 142249, 179489, 181378
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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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Do[ If[ PrimeQ[3^n - 2^(n - 1)], Print[n]], {n, 3000}]
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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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