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 A140857 #12 Sep 08 2022 08:45:35 %S A140857 73,283,1123,1543,1753,2383,2593,2803,3433,3643,3853,4273,4483,4903, %T A140857 5113,5323,5743,5953,6163,6373,6793,7213,8053,8263,8893,9103,9733, %U A140857 10993,11833,12043,12253,13093,13513,13723,13933,14143,14563,14983,15193 %N A140857 Primes of the form 210k + 73. %t A140857 Select[73+210Range[0,150],PrimeQ] (* _Ray Chandler_, Apr 29 2010 *) %o A140857 (Magma) [ a: n in [0..900] | IsPrime(a) where a is 210*n+73] // _Vincenzo Librandi_, Nov 24 2010 %Y A140857 Cf. A073102. %K A140857 nonn %O A140857 1,1 %A A140857 _Juri-Stepan Gerasimov_, Jul 04 2008 %E A140857 Corrected and extended by several authors, Apr 29 2010