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 A140088 #6 Feb 05 2014 20:18:46 %S A140088 0,0,0,1,6,24,78,368,1902,11062,77426,692414,6261624,68889928, %T A140088 764874856,9274470290 %N A140088 Number of primes p such that n!-p is prime. %C A140088 Equals 2*A062311(n) except when n=3. %Y A140088 Cf. A062311. %K A140088 nonn %O A140088 0,5 %A A140088 _Leroy Quet_ and others, May 02 2008 %E A140088 a(14), a(15) from _Hans Havermann_, Dec 21 2008