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A057733
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Primes of the form 2^k + 3.
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34
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5, 7, 11, 19, 67, 131, 4099, 32771, 65539, 262147, 268435459, 1073741827, 36028797018963971, 147573952589676412931, 19342813113834066795298819, 431359146674410236714672241392314090778194310760649159697657763987459
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OFFSET
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1,1
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LINKS
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FORMULA
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MAPLE
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for n from 1 to 2000 do `if`(isprime(2^n + 3), 2^n + 3, NULL) od;
# alternative:
select(isprime, [seq(2^n+3, n=1..2000)]); # Robert Israel, Dec 28 2015
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MATHEMATICA
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Select[Table[2^n + 3, {n, 230}], PrimeQ] (* Jayanta Basu, May 23 2013 *)
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PROG
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(Magma) [ a: n in [0..250] | IsPrime(a) where a is 2^n+3 ] // Vincenzo Librandi, Aug 07 2010
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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More terms from Francois Jooste (pin(AT)myway.com), Mar 17 2003
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STATUS
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approved
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