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A063791
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Numbers n such that 2^(n+1) - n - 2 is prime.
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1
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3, 9, 13, 15, 25, 49, 55, 69, 115, 2071, 6249, 13669, 14215, 14625
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Dean Hickerson, personal communication.
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PROG
| (PARI) for(n=1, 5000, if(isprime(2^(n+1)-n-2), print(n)))
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CROSSREFS
| Sequence in context: A193927 A111230 A046865 * A077791 A176393 A163595
Adjacent sequences: A063788 A063789 A063790 * A063792 A063793 A063794
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KEYWORD
| nonn
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AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Aug 17 2001
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EXTENSIONS
| More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008
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