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 A140844 #18 Aug 23 2024 16:14:14 %S A140844 23,233,443,653,863,1283,1493,1913,2333,2543,2753,2963,3593,3803,4013, %T A140844 4643,5273,5483,5693,5903,6113,6323,7583,7793,8423,9473,10103,10313, %U A140844 10733,11783,12203,12413,13043,13463,13883,14303,14723,15773,16193 %N A140844 Primes of the form 210k + 23. %t A140844 Select[23+210Range[0,150],PrimeQ] (* _Ray Chandler_, Apr 29 2010 *) %o A140844 (Magma) [a: n in [0..900]|IsPrime(a) where a is 210*n+23]; // _Vincenzo Librandi_, Nov 24 2010 %Y A140844 Cf. A073102. %K A140844 nonn %O A140844 1,1 %A A140844 _Juri-Stepan Gerasimov_, Jul 04 2008 %E A140844 Extended by several authors, Apr 29 2010