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A364698
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Numbers k such that k! + k^2 + k - 1 is prime.
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0
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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For k = 2, 2! + 2^2 + 2 - 1 = 7 is a prime.
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MATHEMATICA
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Select[Range[1100], PrimeQ[#! + #^2 + # - 1] &] (* Amiram Eldar, Aug 03 2023 *)
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PROG
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(PARI) for (k=1, 10^3, if(ispseudoprime(k! + k^2 + k - 1), print1(k, ", ")))
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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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