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 A141880 #14 Aug 17 2023 20:47:30 %S A141880 53,167,281,433,509,547,661,1117,1193,1231,1307,1459,1801,1877,2029, %T A141880 2143,2333,2371,2447,2713,2789,2903,3169,3359,3511,3701,3739,3853, %U A141880 3929,3967,4157,4271,4423,4651,4993,5107,5297,5449,5563,5639,5791,5867,5981,6133 %N A141880 Primes congruent to 15 mod 19. %H A141880 Vincenzo Librandi, <a href="/A141880/b141880.txt">Table of n, a(n) for n = 1..1000</a> %F A141880 a(n) ~ 18n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A141880 Select[Range[15,5000,19],PrimeQ[#]&] (* _Vladimir Joseph Stephan Orlovsky_, Apr 03 2011*) %t A141880 Select[Prime[Range[800]],Mod[#,19]==15&] (* _Harvey P. Dale_, Aug 17 2023 *) %o A141880 (Magma) [p: p in PrimesUpTo(7000) | p mod 19 eq 15 ]; // _Vincenzo Librandi_, Aug 15 2012 %o A141880 (PARI) is(n)=isprime(n) && n%19==15 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A141880 Cf. A000040, A141869. %K A141880 nonn,easy %O A141880 1,1 %A A141880 _N. J. A. Sloane_, Jul 11 2008