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 A203704 #8 Jan 14 2013 04:53:34
%S A203704 19,1911,576937,1189591767,1496438765409,8435413586003607,
%T A203704 23479548077360291553,250967765143098771948999,
%U A203704 9627548485949418328668911673,67370251155902517367181687865633,3815405119576878725560291907907477303
%N A203704 v(n+1)/v(n), where v=A203703.
%C A203704 See A093883 for a discussion and guide to related sequences.
%t A203704 f[j_] := Prime[j]; z = 11;
%t A203704 u := Product[f[j]^2 + f[j] f[k] + f[k]^2, {j, 1, k - 1}]
%t A203704 v[n_] := Product[u, {k, 2, n}]
%t A203704 Table[v[n], {n, 1, z}] (* A203703 *)
%t A203704 Table[v[n + 1]/v[n], {n, 1, z}] (* A203704 *)
%K A203704 nonn
%O A203704 1,1
%A A203704 _Clark Kimberling_, Jan 05 2012