A045364 - OEIS

%I #10 Sep 08 2022 08:44:55

%S 2,5,13,19,23,29,37,41,43,47,61,71,79,83,89,97,103,107,113,127,131,

%T 139,149,163,167,173,181,191,197,211,223,229,233,239,251,257,271,281,

%U 293,307,313,317,331,337,349,359

%N Primes congruent to {1, 2, 5, 6} mod 7.

%H Vincenzo Librandi, <a href="/A045364/b045364.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[300]],MemberQ[{1, 2,5,6},Mod[#,7]]&] (* _Vincenzo Librandi_, Aug 10 2012 *)

%o (Magma) [p: p in PrimesUpTo(600) | p mod 7 in [1, 2, 5, 6]]; // _Vincenzo Librandi_, Aug 10 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_