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Search: id:A074326
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| A074326 |
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Numbers n such that difference between (1+2^n)-th and (2^n)-th primes is 2. |
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2
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OFFSET
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1,2
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FORMULA
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Solutions to A051439(x)-A033844(x)=2
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EXAMPLE
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n=39: 2^39=549755813888, prime[549755813889]=16149760533343, prime[549755813888]=16149760533341, difference=2,just twin primes.
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MATHEMATICA
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s=0; Do[s=Prime[1+2^n]-Prime[2^n]; If[s==2, Print[{n, Prime[2^n]}]], {n, 1, 40}]
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CROSSREFS
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Cf. A051439, A033844, A073798, A000079.
Sequence in context: A049721 A092115 A083966 this_sequence A099102 A001743 A046344
Adjacent sequences: A074323 A074324 A074325 this_sequence A074327 A074328 A074329
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KEYWORD
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more,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Aug 21 2002
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