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A242797
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Numbers n such that (45^n - 1)/44 is prime.
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5
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OFFSET
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1,1
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COMMENTS
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a(7) > 10^5.
Numbers corresponding to a(4)-a(6) are probable primes.
All terms are prime.
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LINKS
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MAPLE
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MATHEMATICA
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Select[Prime[Range[100000]], PrimeQ[(45^# - 1)/44] &]
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PROG
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CROSSREFS
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Cf. A028491, A004061, A004062, A004063, A004023, A005808, A004064, A016054, A006032, A006033, A006034, A006035, A127995, A127996, A127997, A127998, A127999, A098438, A128002, A128003, A128004, A128005, A240765.
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KEYWORD
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hard,more,nonn
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AUTHOR
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EXTENSIONS
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a(7)=216551 corresponds to a probable prime discovered by Paul Bourdelais, Aug 04 2020
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STATUS
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approved
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