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 A142802 #11 Sep 08 2022 08:45:37
%S A142802 431,797,919,1163,2017,2383,2749,3359,3847,4091,4457,5189,6043,6287,
%T A142802 6653,7019,7507,7873,8117,8849,8971,9337,10069,10313,11411,11777,
%U A142802 12143,13241,13729,14461,14827,15193,15559,15803,16657,16901,17389,18121,18731,19219
%N A142802 Primes congruent to 4 mod 61.
%H A142802 Vincenzo Librandi, <a href="/A142802/b142802.txt">Table of n, a(n) for n = 1..1000</a>
%t A142802 Select[Prime[Range[2700]], MemberQ[{4}, Mod[#, 61]] &] (* _Vincenzo Librandi_, Sep 05 2012 *)
%t A142802 Select[Range[4,20000,61],PrimeQ] (* _Harvey P. Dale_, Dec 09 2013 *)
%o A142802 (Magma) [p: p in PrimesUpTo(22000) | p mod 61 eq 4 ]; // _Vincenzo Librandi_, Sep 05 2012
%Y A142802 Cf. A000040.
%K A142802 nonn,easy
%O A142802 1,1
%A A142802 _N. J. A. Sloane_, Jul 11 2008