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 A141895 #20 Sep 08 2022 08:45:35 %S A141895 37,79,163,331,373,457,499,541,709,751,877,919,1087,1129,1171,1213, %T A141895 1297,1381,1423,1549,1759,1801,2011,2053,2137,2179,2221,2347,2389, %U A141895 2473,2557,2683,2767,2851,3019,3061,3187,3229,3271,3313,3607,3691,3733,3943,4027 %N A141895 Primes congruent to 16 mod 21. %H A141895 Vincenzo Librandi, <a href="/A141895/b141895.txt">Table of n, a(n) for n = 1..1000</a> %F A141895 a(n) ~ 12n log n. - _Charles R Greathouse IV_, Jul 03 2016 %t A141895 Select[Range[16,5000,21],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 04 2011 *) %o A141895 (Magma) [ p: p in PrimesUpTo(5000) | p mod 21 eq 16 ]; // _Vincenzo Librandi_, Apr 05 2011 %o A141895 (PARI) is(n)=isprime(n) && n%21==16 \\ _Charles R Greathouse IV_, Jul 03 2016 %Y A141895 Cf. A000040, A124826. %K A141895 nonn,easy %O A141895 1,1 %A A141895 _N. J. A. Sloane_, Jul 11 2008