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 A268504 #22 Jul 06 2019 04:11:39
%S A268504 1,6,4320,1567641600,750902834626560000,
%T A268504 981936389699695364014080000000,
%U A268504 6286723722110812136775527266768650240000000000,321194638135877430211257700556824829511701622266265600000000000000
%N A268504 a(n) = Product_{k=0..n} (3*k)!.
%C A268504 Partial products of A100732. - _Michel Marcus_, Jul 06 2019
%H A268504 Seiichi Manyama, <a href="/A268504/b268504.txt">Table of n, a(n) for n = 0..22</a>
%F A268504 a(n) ~ Gamma(1/3)^(1/3) * 3^(3*n^2/2 + 2*n + 11/36) * 2^(n/2 + 1/3) * Pi^(n/2 + 1/3) * n^(3*n^2/2 + 2*n + 19/36) / (A^(1/3) * exp(9*n^2/4 + 2*n - 1/36)), where A = A074962 is the Glaisher-Kinkelin constant.
%t A268504 Table[Product[(3*k)!,{k,0,n}],{n,0,10}]
%o A268504 (PARI) {a(n) = prod(k=1, n, (3*k)!)} \\ _Seiichi Manyama_, Jul 06 2019
%Y A268504 Cf. A000178, A098694, A100732, A268196, A268505, A268506, A271946, A271947.
%K A268504 nonn
%O A268504 0,2
%A A268504 _Vaclav Kotesovec_, Apr 16 2016