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Search: id:A063791
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| A063791 |
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Numbers n such that 2^(n+1) - n - 2 is prime. |
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+0
2
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| 3, 9, 13, 15, 25, 49, 55, 69, 115, 2071, 6249, 13669, 14215, 14625
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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Dean Hickerson, personal communication.
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PROGRAM
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(PARI) for(n=1, 5000, if(isprime(2^(n+1)-n-2), print(n)))
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CROSSREFS
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Sequence in context: A050571 A111230 A046865 this_sequence A077791 A163595 A088090
Adjacent sequences: A063788 A063789 A063790 this_sequence A063792 A063793 A063794
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 17 2001
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EXTENSIONS
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More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008
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