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A057184
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Numbers n such that (18^n + 1)/19 is a prime.
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15
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OFFSET
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1,1
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LINKS
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J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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a(10) = 481147 corresponds to a probable prime, which was found using PFGW v3.3.1. - Paul Bourdelais, Jul 27 2011
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STATUS
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approved
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