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 A262972 Numbers n such that 4^n + 33 is prime. 1
 1, 3, 6, 7, 10, 15, 30, 34, 54, 58, 103, 105, 205, 223, 279, 741, 2098, 3523, 9210, 37674, 89895, 101509 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Contains exactly the halved even terms of A247953. LINKS MATHEMATICA Select[Range[0, 250000], PrimeQ[4^# + 33] &] PROG (MAGMA) [n: n in [0..700] | IsPrime(4^n+33)]; // Vincenzo Librandi, Oct 06 2015 (PARI) for(n=1, 1e3, if(isprime(4^n+33), print1(n", "))) \\ Altug Alkan, Oct 06 2015 CROSSREFS Cf. A247953. Cf. similar sequences of the type "Numbers n such that 4^n+k is prime" listed in A253772. Sequence in context: A285569 A024412 A255508 * A115127 A258354 A292608 Adjacent sequences:  A262969 A262970 A262971 * A262973 A262974 A262975 KEYWORD nonn,more AUTHOR Robert Price, Oct 05 2015 STATUS approved

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Last modified December 12 16:06 EST 2018. Contains 318077 sequences. (Running on oeis4.)