The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #16 Sep 08 2022 08:45:17
%S 3,23,43,83,103,163,223,263,283,383,443,463,503,523,563,643,683,743,
%T 823,863,883,983,1063,1103,1123,1163,1223,1283,1303,1423,1483,1523,
%U 1543,1583,1663,1723,1783,1823,2003,2063,2083,2143,2203,2243,2383,2423,2503,2543
%N Primes of the form 20*k + 3.
%C Cf. A030431: Primes of the form 10*k + 3.
%H Vincenzo Librandi, <a href="/A105854/b105854.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[3, 2003, 20], PrimeQ[ # ]&]
%o (Magma) [n: n in PrimesUpTo(2600) | IsDivisibleBy(n-3,20)]; // _Bruno Berselli_, Apr 05 2011
%o (Magma) [ a: n in [0..250] | IsPrime(a) where a is 20*n+3 ]; // _Vincenzo Librandi_, Apr 06 2011
%Y Cf. A000040, A030431.
%K nonn,easy
%O 1,1
%A _Zak Seidov_, May 05 2005
%E More terms from _N. J. A. Sloane_, Jul 11 2008