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Odd primes such that (3p+1)/2 and 3p+4 are also prime.
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%I #9 Nov 21 2013 12:46:03

%S 3,11,19,31,59,131,151,179,311,431,439,619,739,811,839,1039,1231,1399,

%T 1531,1699,1879,1951,2111,2351,2411,2671,2699,2719,2819,2939,3259,

%U 3391,3491,4211,4259,4639,5039,5779,6151,6359

%N Odd primes such that (3p+1)/2 and 3p+4 are also prime.

%H Harvey P. Dale, <a href="/A014223/b014223.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[2,900]],And@@PrimeQ[{(3#+1)/2,3#+4}]&] (* _Harvey P. Dale_, Nov 19 2011 *)

%K nonn

%O 1,1

%A _Jud McCranie_