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 A142201 #13 Sep 08 2022 08:45:35
%S A142201 127,373,619,701,947,1193,1439,1931,2341,2423,2833,3079,3407,3571,
%T A142201 4391,4637,4801,5867,6113,6277,6359,7507,7589,7753,8081,8573,8737,
%U A142201 8819,9311,9721,9803,9967,10459,11197,11279,11443,11689,12263,12919,13001,13411,13903
%N A142201 Primes congruent to 4 mod 41.
%H A142201 Vincenzo Librandi, <a href="/A142201/b142201.txt">Table of n, a(n) for n = 1..1000</a>
%F A142201 a(n) ~ 40n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t A142201 Select[Range[4,30000,41],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, May 17 2011 *)
%t A142201 Select[Prime[Range[5000]],MemberQ[{4},Mod[#,41]]&] (* _Vincenzo Librandi_, Aug 23 2012 *)
%o A142201 (Magma) [p: p in PrimesUpTo(14000) | p mod 41 eq 4 ]; // _Vincenzo Librandi_, Aug 23 2012
%o A142201 (PARI) is(n)=isprime(n) && n%41==4 \\ _Charles R Greathouse IV_, Jul 02 2016
%Y A142201 Cf. A000040, A059236, A142199, A142200.
%K A142201 nonn,easy
%O A142201 1,1
%A A142201 _N. J. A. Sloane_, Jul 11 2008