%I #9 Sep 08 2022 08:44:51
%S 7,13,19,23,31,37,41,53,67,89,101,103,107,109,137,139,157,163,167,191,
%T 199,227,233,251,257,263,271,277,293,311,313,331,349,367,373,383,389,
%U 397,409,431,433,443,461,467,503,509
%N Primes p such that 6!+p is also prime.
%H Vincenzo Librandi, <a href="/A033561/b033561.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime[Range[800]], PrimeQ[# + 720]&] (* _Vincenzo Librandi_, Apr 10 2013 *)
%o (Magma) [p: p in PrimesUpTo(800)|IsPrime(p+720)]; // _Vincenzo Librandi_, Apr 10 2013
%K nonn,easy
%O 1,1
%A _Jeff Burch_