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A302088
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Numbers k such that 5*k^k + 4 is prime.
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2
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OFFSET
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1,1
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COMMENTS
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Next term, if it exists, is greater than 5000.
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LINKS
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MATHEMATICA
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PROG
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(PARI) for(n=0, 500, if(isprime(5*n^n+4), print1(n", ")))
(PARI) lista(nn) = forstep(n=1, nn, 2, if(ispseudoprime(5*n^n+4), print1(n, ", "))); \\ Altug Alkan, Apr 01 2018
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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