A215166 - OEIS

%I #7 Sep 08 2022 08:46:03

%S 23,61,137,191,229,251,419,457,479,571,593,631,647,761,821,859,1049,

%T 1087,1103,1163,1201,1217,1277,1429,1483,1543,1559,1597,1619,1657,

%U 1733,1787,1847,1901,1999,2053,2113,2129,2243,2281,2341,2357,2417,2531,2683

%N Primes congruent to {1, 4} mod 19.

%H Vincenzo Librandi, <a href="/A215166/b215166.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[3000]],MemberQ[{1,4},Mod[#,19]]&]

%o (Magma)[ p: p in PrimesUpTo(3000) | p mod 19 in {1, 4} ];

%Y Cf. A000040, A045469.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Aug 06 2012