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A268211
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Numbers n of the form 2^k + 1 such that n + k is a prime q (for k >= 0).
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1
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OFFSET
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1,1
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COMMENTS
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Corresponding values of numbers k are in A100359 (numbers n such that 2^n+n+1 is prime).
Corresponding values of primes q are in A061421 (primes of the form 2^n+n+1).
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LINKS
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FORMULA
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EXAMPLE
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65 = 2^6 + 1 is a term because 65 + 6 = 71 (prime).
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MATHEMATICA
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2^# + 1 &@ Select[Range[0, 600], PrimeQ[2^# + # + 1] &] (* Michael De Vlieger, Jan 29 2016 *)
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PROG
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(Magma) [2^n + 1: n in [0..600] | IsPrime(2^n + n + 1)]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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