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A057678
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Primes of the form 2^p - p where p is prime.
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5
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OFFSET
| 1,1
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COMMENTS
| Next term, if it exists, has more than 618 digits. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 27 2005
Next term, if it exists, has more than 10,000 digits.
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MAPLE
| a:=proc(n) if isprime(2^ithprime(n)-ithprime(n))=true then 2^ithprime(n)-ithprime(n) else fi end: seq(a(n), n=1..310); (Deutsch)
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MATHEMATICA
| lst={}; Do[p=Prime[n]; If[PrimeQ[p=2^p-p], AppendTo[lst, p]], {n, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 28 2009]
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CROSSREFS
| Cf. A057663-A057665, A056677.
Sequence in context: A187604 A082815 A115893 * A090071 A139062 A122760
Adjacent sequences: A057675 A057676 A057677 * A057679 A057680 A057681
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Oct 19 2000
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