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 A140367 #14 Sep 21 2024 15:09:30 %S A140367 57,135,161,187,213,265,291,343,369,395,447,473,525,551,603,629,655, %T A140367 681,707,759,785,837,889,915,993,1045,1071,1149,1175,1227,1253,1305, %U A140367 1331,1357,1383,1435,1461,1513,1539,1565,1591,1617,1643,1695,1773,1799,1825 %N A140367 Composites of the form 26k + 5. %H A140367 Author?, <a href="http://ssd.sscc.ru/qt/primes.html">Tables of primes up to 9999</a> %t A140367 Select[26Range[0,80]+5,!PrimeQ[#]&] (* _Harvey P. Dale_, May 26 2011 *) %o A140367 (Magma) [(26*n+5): n in [0..100]|not IsPrime(26*n+5)]; // _Vincenzo Librandi_, Dec 18 2010 %Y A140367 Cf. A102732. %K A140367 nonn,less %O A140367 1,1 %A A140367 _Juri-Stepan Gerasimov_, Jun 14 2008 %E A140367 Edited by _R. J. Mathar_, Jun 16 2008