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A096185
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Numbers k such that 7^k + 6^(k-1) is prime.
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19
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3, 4, 8, 9, 16, 25, 33, 40, 116, 201, 208, 504, 579, 964, 1060, 1160, 1508, 1969, 4615, 7311, 65964, 83121, 87396
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Do[ If[ PrimeQ[7^n + 6^(n - 1)], Print[n]], {n, 4000}]
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PROG
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(PARI) lista(nn) = {for(n=1, nn, if(ispseudoprime(7^n+6^(n-1)), print1(n, ", "))); } \\ Altug Alkan, Mar 23 2016
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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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