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A057437
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Numbers k such that 10*7^k + 1 is prime.
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1
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0, 1, 2, 5, 7, 9, 11, 14, 22, 45, 54, 67, 74, 321, 706, 902, 962, 11393, 13605, 17005, 17364, 27129, 27674
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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[ 10*7^n + 1], Print[n]], {n, 1, 1000}]
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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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First term 0 inserted by and a(18)-a(21) from Jinyuan Wang, Jan 21 2020
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STATUS
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approved
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