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 A140381 #11 Sep 08 2022 08:45:34 %S A140381 9,51,65,93,121,135,177,205,219,247,261,275,289,303,345,387,415,429, %T A140381 471,485,513,527,555,583,597,611,625,639,667,681,695,723,737,765,779, %U A140381 793,807,835,849,891,905,933,961,975,989,1003,1017,1045,1059,1073,1101,1115 %N A140381 Composites of the form 14k + 9. %t A140381 Select[14*Range[0,100]+9,CompositeQ] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Apr 28 2018 *) %o A140381 (Magma) [(14*n+9): n in [0..100]|not IsPrime(14*n+9)] // _Vincenzo Librandi_, Dec 18 2010 %Y A140381 Cf. A045392. %K A140381 nonn,less %O A140381 1,1 %A A140381 _Juri-Stepan Gerasimov_, Jun 13 2008 %E A140381 Edited by _R. J. Mathar_, Jun 16 2008