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 A111180 #15 Nov 04 2014 17:55:50
%S A111180 1,2,12,1440,7257600,289700167680000,1803968969906847744000000,
%T A111180 641649083271157094762019815424000000000,
%U A111180 78053467161754909919949074014980107579424768000000000000
%N A111180 Product_{k=1..n} prime(k)!.
%e A111180 2, 3, 5 and 7 are the first 4 primes. So a(4) = 2! * 3! * 5! * 7! = 2 *6 *120 *5040 = 7257600.
%t A111180 Table[ Product[ Prime[i]!, {i, n}], {n, 0, 8}] (* _Robert G. Wilson v_ *)
%t A111180 FoldList[Times,1,Prime[Range[10]]!] (* _Harvey P. Dale_, Apr 08 2012 *)
%Y A111180 Cf. A039716.
%K A111180 easy,nonn
%O A111180 0,2
%A A111180 _Leroy Quet_, Oct 22 2005
%E A111180 More terms from _Robert G. Wilson v_, Oct 29 2005