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 A142104 #15 Jun 29 2025 21:29:27
%S A142104 13,157,193,229,337,373,409,661,733,769,877,1021,1093,1129,1201,1237,
%T A142104 1381,1453,1489,1597,1669,1741,1777,1993,2029,2137,2281,2389,2677,
%U A142104 2713,2749,2857,3001,3037,3109,3181,3217,3253,3361,3433,3469,3541,3613,3793,4153
%N A142104 Primes congruent to 13 mod 36.
%H A142104 Vincenzo Librandi, <a href="/A142104/b142104.txt">Table of n, a(n) for n = 1..1000</a>
%t A142104 Select[Range[13, 20000, 36], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jul 02 2011 *)
%t A142104 Select[Prime[Range[1500]],MemberQ[{13},Mod[#,36]]&] (* _Vincenzo Librandi_, Aug 19 2012 *)
%o A142104 (PARI) select(n->n%36==13,primes(1000)) \\ _Charles R Greathouse IV_, Jul 02 2011
%o A142104 (Magma) [p: p in PrimesUpTo(5000) | p mod 36 eq 13 ]; // _Vincenzo Librandi_, Aug 19 2012
%Y A142104 Cf. A000040.
%K A142104 nonn,easy
%O A142104 1,1
%A A142104 _N. J. A. Sloane_, Jul 11 2008