This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A045435 #14 Sep 08 2022 08:44:56
%S A045435 3,13,19,23,29,43,53,59,73,79,83,89,103,109,113,139,149,163,173,179,
%T A045435 193,199,223,229,233,239,263,269,283,293,313,349,353,359,373,379,383,
%U A045435 389,409,419,433,439,443,449,463
%N A045435 Primes congruent to {3, 4} mod 5.
%H A045435 Vincenzo Librandi, <a href="/A045435/b045435.txt">Table of n, a(n) for n = 1..1000</a>
%t A045435 Select[Prime[Range[100]],MemberQ[{3,4},Mod[#,5]]&] (* _Harvey P. Dale_, Mar 04 2011 *)
%o A045435 (Magma)[ p: p in PrimesUpTo(600) | p mod 5 in {3,4} ]; // _Vincenzo Librandi_, Aug 13 2012
%Y A045435 Cf. A000040.
%K A045435 nonn,easy
%O A045435 1,1
%A A045435 _N. J. A. Sloane_