%I #30 Sep 08 2022 08:44:48
%S 4,6,10,16,18,28,30,34,40,48,54,60,64,66,70,78,88,90,94,96,100,106,
%T 108,118,126,130,136,138,144,150,156,166,184,186,196,204,210,214,226,
%U 228,238,244,246,268,276,286,288,298,304,306,316,324,328,330,334,340,346,348,360,364
%N Numbers k such that 7*k + 1 is prime.
%H Vincenzo Librandi, <a href="/A024905/b024905.txt">Table of n, a(n) for n = 1..1000</a>
%p select(k->isprime(7*k+1),[$1..370]); # _Muniru A Asiru_, Jul 15 2018
%t Select[Range[400], PrimeQ[7 # + 1] &] (* _Vladimir Joseph Stephan Orlovsky_, Feb 25 2011 *)
%o (Magma) [n: n in [1..10000] | IsPrime(7*n+1)]; // _Vincenzo Librandi_, Nov 20 2010
%o (PARI) is(n)=isprime(7*n+1) \\ _Charles R Greathouse IV_, Feb 20 2017
%Y Associated primes are contained in A045465.
%K nonn,easy
%O 1,1
%A _Clark Kimberling_