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 A157625 #15 Dec 13 2014 00:48:20
%S A157625 1,4,24,48,4320,8640,120960,3628800,7257600,14515200,6706022400,
%T A157625 13412044800,8717829120000,470762772480000,941525544960000,
%U A157625 1883051089920000,2112783322890240000,147894832602316800000
%N A157625 Product of the composite numbers between n+1 and 2n, both inclusive.
%C A157625 This function is very useful in a problem due to Paul Erdős recorded in A157017. - _M. F. Hasler_, Feb 26 2014
%F A157625 a(n) = n!*A000984(n)*A034386(n)/A034386(2n). - _M. F. Hasler_, Feb 26 2014
%t A157625 nn=20;With[{comps=Complement[Range[2nn],Prime[Range[PrimePi[2nn]]]]}, Table[ Times@@ Select[comps,#>n&&#<=2n&],{n,nn}]] (* _Harvey P. Dale_, Feb 18 2013 *)
%o A157625 (PARI) a(n)=prod(i=n+1,2*n,if(isprime(i),1,i))
%Y A157625 Cf. A073840, A157017, A144186 (product of primes between n+2 and 2n, both inclusive).
%K A157625 nonn
%O A157625 1,2
%A A157625 _Jaume Oliver Lafont_, Mar 03 2009