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 A187874 #5 Mar 30 2012 18:52:14 %S A187874 3,3,5,11,31,131,733,5059,40351,362903,3628819,39916817,479001643, %T A187874 6227020873,87178291241,1307674368149,20922789888041,355687428096053, %U A187874 6402373705728061,121645100408832109,2432902008176640037,51090942171709440037 %N A187874 Second smallest prime after n!. %e A187874 2!=2, second smallest prime=5; %e A187874 3!=6, second smallest prime=11; .. %t A187874 NextPrime[Range[0, 30]!, 2] %Y A187874 Cf. A037151, A037152, A087421. %K A187874 nonn %O A187874 0,1 %A A187874 _Vladimir Joseph Stephan Orlovsky_, Mar 14 2011