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 A142204 #12 Sep 08 2022 08:45:35
%S A142204 7,89,499,827,991,1237,1319,1483,1811,2221,2467,2549,2713,3041,3533,
%T A142204 3697,3779,3943,4271,4517,5009,5419,5501,6977,7879,8699,8863,9109,
%U A142204 9437,9601,9929,10093,10667,10831,11159,11897,12143,12553,12799,13127,13291,13537
%N A142204 Primes congruent to 7 mod 41.
%H A142204 Vincenzo Librandi, <a href="/A142204/b142204.txt">Table of n, a(n) for n = 1..1000</a>
%F A142204 a(n) ~ 40n log n. - _Charles R Greathouse IV_, Jul 02 2016
%t A142204 Select[Range[7,30000,41],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, May 17 2011 *)
%t A142204 Select[Prime[Range[5000]],MemberQ[{7},Mod[#,41]]&] (* _Vincenzo Librandi_, Aug 23 2012 *)
%o A142204 (Magma) [p: p in PrimesUpTo(14000) | p mod 41 eq 7 ]; // _Vincenzo Librandi_, Aug 23 2012
%o A142204 (PARI) is(n)=isprime(n) && n%41==7 \\ _Charles R Greathouse IV_, Jul 02 2016
%Y A142204 Cf. A000040, A059236, A142199, A142200.
%K A142204 nonn,easy
%O A142204 1,1
%A A142204 _N. J. A. Sloane_, Jul 11 2008