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A242176
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Numbers k such that k*6^k + 1 is prime.
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9
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1, 2, 91, 185, 387, 488, 747, 800, 9901, 10115, 12043, 13118, 30981, 51496
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[Range[1500], PrimeQ[# 6^# + 1] &]
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PROG
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(Magma) [n: n in [0..1500] | IsPrime(n*6^n+1)];
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CROSSREFS
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Cf. numbers n such that n*k^n + 1 is prime: A005849 (k=2), A006552 (k=3), A007646 (k=4), this sequence (k=6), A242177 (k=7), A242178 (k=8), A007647 (k=10), A242196 (k=12), A242197 (k=14), A242198 (k=15), A242199 (k=16), A007648 (k=18).
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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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