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 A140557 #13 Sep 08 2022 08:45:34 %S A140557 2,7,11,13,19,31,37,41,43,61,67,71,73,79,97,101,103,107,109,127,131, %T A140557 139,151,157,163,173,181,191,193,199,211,223,229,233,239,241,251,271, %U A140557 277,281,283,307,311,313,331,337,347,349,367,373,379,389,397,401,409,421 %N A140557 Primes p such that p + 14 is composite. %t A140557 Select[Prime[Range[100]],!PrimeQ[#+14]&] (* _Harvey P. Dale_, Jun 13 2011 *) %o A140557 (Magma)[p: p in PrimesUpTo(500)|not IsPrime(p+14)]; // _Vincenzo Librandi_, Dec 18 2010 %K A140557 nonn,easy,less %O A140557 1,1 %A A140557 _Juri-Stepan Gerasimov_, Jul 03 2008, Aug 15 2009 %E A140557 Edited by _Charles R Greathouse IV_, Mar 24 2010