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Search: id:A059803
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| A059803 |
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Numbers n such that 9^n - 8^n is prime. |
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+0
2
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| 2, 7, 29, 31, 67, 149, 401, 2531, 19913, 30773, 53857, 170099
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Some of the larger entries may only correspond to probable primes.
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CROSSREFS
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Cf. A000043, A057468, A059801-...
Sequence in context: A013011 A013181 A122118 this_sequence A076043 A116968 A162172
Adjacent sequences: A059800 A059801 A059802 this_sequence A059804 A059805 A059806
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KEYWORD
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nonn,hard
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AUTHOR
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Mike Oakes (Mikeoakes2(AT)aol.com), Feb 23 2001
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EXTENSIONS
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Three more terms found by Jean-Louis Charton in 2004-2005: a(9) = 30773, a(10) = 53857, a(11) = 170099. - Alexander Adamchuk (alex(AT)kolmogorov.com), Dec 08 2006
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