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 A142015 #16 Sep 08 2022 08:45:35 %S A142015 11,73,197,383,569,631,941,1499,1747,1871,1933,2243,2677,2801,3049, %T A142015 3359,3607,3793,3917,4289,4723,4909,5281,5591,5653,5839,6211,6397, %U A142015 6521,7079,7451,7699,7823,8009,8443,8629,8753,9001,9187,9311,9497,9931,10303,10427 %N A142015 Primes congruent to 11 mod 31. %H A142015 Vincenzo Librandi, <a href="/A142015/b142015.txt">Table of n, a(n) for n = 1..1000</a> %F A142015 a(n) ~ 30n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A142015 Select[Range[11,20000,31],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 20 2011 *) %o A142015 (Magma) [ p: p in PrimesUpTo(30000) | p mod 31 eq 11 ]; // _Vincenzo Librandi_, Apr 20 2011 %o A142015 (PARI) is(n)=isprime(n) && n%31==11 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A142015 Cf. A000040, A142005, A142006. %K A142015 nonn,easy %O A142015 1,1 %A A142015 _N. J. A. Sloane_, Jul 11 2008