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A258944
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Odd primes p that divide 2! + 3! + ... + (p-1)!.
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1
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OFFSET
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1,1
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COMMENTS
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In other words, the odd primes p that divide A003422(p) - 2. Or the primes p with A049782(p) = 2.
Andrejic and Tatarevic found a(3).
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LINKS
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PROG
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(PARI) forprime(p=3, 1e11, if(sum(k=2, p-1, k!) % p==0, print1(p, ", "))); \\ Altug Alkan, Nov 08 2015
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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