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 A142789 #11 Sep 08 2022 08:45:37
%S A142789 19,79,139,199,379,439,499,619,739,859,919,1039,1279,1399,1459,1579,
%T A142789 1699,1759,1879,1999,2179,2239,2539,2659,2719,3019,3079,3259,3319,
%U A142789 3499,3559,3739,3919,4099,4159,4219,4339,4519,4639,4759,4999,5059,5119,5179,5419
%N A142789 Primes congruent to 19 mod 60.
%H A142789 Vincenzo Librandi, <a href="/A142789/b142789.txt">Table of n, a(n) for n = 1..1000</a>
%F A142789 a(n) ~ 16n log n. - _Charles R Greathouse IV_, Jul 03 2016
%t A142789 Select[Prime[Range[800]], MemberQ[{19}, Mod[#, 60]] &] (* _Vincenzo Librandi_, Sep 04 2012 *)
%t A142789 Select[Range[19,5500,60],PrimeQ] (* _Harvey P. Dale_, Sep 17 2020 *)
%o A142789 (Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 19 ]; // _Vincenzo Librandi_, Sep 04 2012
%o A142789 (PARI) is(n)=isprime(n) && n%60==19 \\ _Charles R Greathouse IV_, Jul 03 2016
%Y A142789 Cf. A000040.
%K A142789 nonn,easy
%O A142789 1,1
%A A142789 _N. J. A. Sloane_, Jul 11 2008