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 A272241 #10 Apr 01 2024 09:39:28
%S A272241 1,2,7200,474211584000,1981999450972492922880000,
%T A272241 1401219961854040654113268364083200000000000,
%U A272241 370389015130516478011776928922387124162707119541939129548800000000
%N A272241 a(n) = Product_{k=0..n} ((n^2 + k)! / (n^2 - k)!).
%C A272241 The next term has 95 digits.
%F A272241 a(n) = A272238(n) / A272164(n).
%F A272241 a(n) ~ exp(5/12) * n^(2*n*(n+1)).
%t A272241 Table[Product[(n^2+k)!/(n^2-k)!,{k,0,n}],{n,0,7}]
%t A272241 Table[BarnesG[n^2 - n + 1]*BarnesG[n^2 + n + 2]/(BarnesG[n^2 + 2]*BarnesG[n^2 + 1]), {n, 0, 6}]
%Y A272241 Cf. A103207, A272164, A272238, A371642.
%K A272241 nonn,easy
%O A272241 0,2
%A A272241 _Vaclav Kotesovec_, Apr 23 2016