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A074326 Numbers n such that difference between (1+2^n)-th and (2^n)-th primes is 2. 1
1, 6, 8, 9, 17, 23, 27, 39 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

Solutions to A051439(x)-A033844(x)=2

EXAMPLE

n=39: 2^39=549755813888, prime[549755813889]=16149760533343, prime[549755813888]=16149760533341, difference=2,just twin primes.

MATHEMATICA

s=0; Do[s=Prime[1+2^n]-Prime[2^n]; If[s==2, Print[{n, Prime[2^n]}]], {n, 1, 40}]

CROSSREFS

Cf. A051439, A033844, A073798, A000079.

Sequence in context: A049721 A092115 A083966 * A174213 A099102 A001743

Adjacent sequences:  A074323 A074324 A074325 * A074327 A074328 A074329

KEYWORD

more,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Aug 21 2002

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Last modified February 17 12:38 EST 2012. Contains 206021 sequences.