A142667 - OEIS

%I #9 Sep 08 2022 08:45:37

%S 61,631,859,1087,1201,1429,1543,1657,1999,2113,2341,2683,2797,3253,

%T 3709,3823,4051,4507,4621,5077,5419,5647,6217,6673,7129,7243,7699,

%U 7927,8269,8839,9067,9181,10093,10321,10663,10891,11119,11689,12373,12487,12601,12829

%N Primes congruent to 4 mod 57.

%H Vincenzo Librandi, <a href="/A142667/b142667.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[2400]], MemberQ[{4}, Mod[#, 57]] &] (* _Vincenzo Librandi_, Sep 01 2012 *)

%t Select[Range[4,13000,57],PrimeQ] (* _Harvey P. Dale_, Mar 26 2016 *)

%o (Magma) [p: p in PrimesUpTo(13000) | p mod 57 eq 4 ]; // _Vincenzo Librandi_, Sep 01 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008