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A367037
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Numbers k such that k^3*2^k - 1 is a prime.
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5
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2, 8, 31, 79, 661, 769, 1904, 2527, 9032, 15895, 19171
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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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Select[Range[3000], PrimeQ[#^3*2^# - 1] &] (* Amiram Eldar, Nov 04 2023 *)
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PROG
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(Magma) [k: k in [1..700] | IsPrime(k^3*2^k-1)];
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CROSSREFS
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Numbers k such that k^m*2^k - 1 is prime: A000043 (m = 0), A002234 (m = 1), A058781 (m = 2), this sequence (m = 3).
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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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