%I #12 Mar 18 2023 17:55:09
%S 3,11,17,29,31,43,53,59,67,71,73,101,109,113,127,137,151,157,179,193,
%T 197,199,211,227,239,241,263,269,277,281,283,311,337,347,353,367,379,
%U 389,409,421,431,449,463,479,487
%N Primes congruent to {1, 3, 4} mod 7.
%H Vincenzo Librandi, <a href="/A045431/b045431.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime[Range[200]],MemberQ[{1,3,4},Mod[#,7]]&] (* _Vincenzo Librandi_, Aug 13 2012 *)
%t Select[Flatten[#+{1,3,4}&/@(7Range[0,70])],PrimeQ] (* _Harvey P. Dale_, Mar 18 2023 *)
%o (Magma) [ p: p in PrimesUpTo(600) | p mod 7 in {1,3,4} ]; // _Vincenzo Librandi_, Aug 13 2012
%Y Cf. A000040.
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_