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 A141892 #22 Nov 20 2022 15:59:53 %S A141892 31,73,157,199,241,283,367,409,577,619,661,787,829,997,1039,1123,1249, %T A141892 1291,1459,1543,1627,1669,1753,1879,2089,2131,2341,2383,2467,2551, %U A141892 2593,2677,2719,2803,2887,2971,3181,3307,3391,3433,3517,3559,3643,3727,3769,3853 %N A141892 Primes congruent to 10 mod 21. %H A141892 Vincenzo Librandi, <a href="/A141892/b141892.txt">Table of n, a(n) for n = 1..1000</a> %F A141892 a(n) ~ 12n log n. - _Charles R Greathouse IV_, Jul 02 2016 %t A141892 Select[Range[10,5000,21],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 04 2011 *) %t A141892 Select[Prime[Range[600]],Mod[#,21]==10&] (* _Harvey P. Dale_, Nov 20 2022 *) %o A141892 (Magma) [ p: p in PrimesUpTo(5000) | p mod 21 eq 10 ]; // _Vincenzo Librandi_, Apr 05 2011 %o A141892 (PARI) is(n)=isprime(n) && n%21==10 \\ _Charles R Greathouse IV_, Jul 02 2016 %Y A141892 Cf. A000040, A124826. %K A141892 nonn,easy %O A141892 1,1 %A A141892 _N. J. A. Sloane_, Jul 11 2008