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A262972
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Numbers k such that 4^k + 33 is prime.
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1
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1, 3, 6, 7, 10, 15, 30, 34, 54, 58, 103, 105, 205, 223, 279, 741, 2098, 3523, 9210, 37674, 89895, 101509, 217123
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OFFSET
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1,2
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COMMENTS
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Contains exactly the halved even terms of A247953.
The next terms are > 2*10^5.
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LINKS
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EXAMPLE
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For k = 30, 4^30 + 33 = 1152921504606847009 is prime.
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MATHEMATICA
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Select[Range[0, 250000], PrimeQ[4^# + 33] &]
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PROG
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(PARI) for(n=1, 1e3, if(isprime(4^n+33), print1(n", "))) \\ Altug Alkan, Oct 06 2015
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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