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 A142216 #17 Sep 08 2022 08:45:36
%S A142216 19,101,347,593,757,839,1249,1741,1823,1987,2069,2971,3217,3299,3463,
%T A142216 3709,4201,4283,4447,5021,5431,5923,6661,6907,7481,7727,8219,8629,
%U A142216 9203,9613,9859,9941,10433,10597,11171,11827,11909,12073,12401,12647,12893,13877
%N A142216 Primes congruent to 19 mod 41.
%H A142216 Vincenzo Librandi, <a href="/A142216/b142216.txt">Table of n, a(n) for n = 1..1000</a>
%F A142216 a(n) ~ 40n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t A142216 Select[Range[19,30000,41],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 03 2011 *)
%t A142216 Select[Prime[Range[5000]],MemberQ[{19},Mod[#,41]]&] (* _Vincenzo Librandi_, Aug 23 2012 *)
%o A142216 (Magma) [p: p in PrimesUpTo(16000) | p mod 41 eq 19 ]; // _Vincenzo Librandi_, Aug 23 2012
%o A142216 (PARI) is(n)=isprime(n) && n%41==19 \\ _Charles R Greathouse IV_, Jul 02 2016
%Y A142216 Cf. A000040, A144562. - _Vincenzo Librandi_, Jan 17 2009
%K A142216 nonn,easy
%O A142216 1,1
%A A142216 _N. J. A. Sloane_, Jul 11 2008