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A240503
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Numbers n such that 5^n-4^n-3^n-2^n-1 is prime.
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3
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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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EXAMPLE
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5^4-4^4-3^4-2^4-1 = 271 is prime. Thus, 4 is a member of this sequence.
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PROG
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(PARI) for(n=1, 7500, if(ispseudoprime(5^n-4^n-3^n-2^n-1), print(n)))
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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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