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 A140368 #12 Sep 08 2022 08:45:34 %S A140368 69,95,121,147,225,303,329,355,381,407,459,485,511,537,589,615,667, %T A140368 693,745,771,849,875,901,927,979,1005,1057,1083,1135,1161,1239,1265, %U A140368 1317,1343,1369,1395,1421,1473,1525,1551,1577,1603,1629,1655,1681,1707,1785 %N A140368 Composites of the form 26k + 17. %t A140368 Select[26*Range[80]+17,!PrimeQ[#]&] (* _Harvey P. Dale_, Oct 22 2013 *) %o A140368 (Magma) [(26*n+17): n in [0..100]|not IsPrime(26*n+17)] // _Vincenzo Librandi_, Dec 18 2010 %Y A140368 Cf. A093191. %K A140368 nonn,less %O A140368 1,1 %A A140368 _Juri-Stepan Gerasimov_, Jun 14 2008 %E A140368 Edited by _R. J. Mathar_, Jun 16 2008