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 A203582 #7 Jan 14 2013 04:31:18
%S A203582 19,1036,116571,22656816,6814202907,2944470267648,1733264443684683,
%T A203582 1335544723529452800,1305986008348685022723,1581171893218923245420544,
%U A203582 2322926322016811685175726011,4072369789139269227339542851584
%N A203582 v(n+1)/v(n), where v=A203581.
%C A203582 See A093883 for a discussion and guide to related sequences.
%t A203582 f[j_] := j + 1; z = 12;
%t A203582 v[n_] := Product[Product[f[j]^2 + f[j] f[k] + f[k]^2,
%t A203582 {j, 1, k - 1}], {k, 2, n}]
%t A203582 Table[v[n], {n, 1, z}] (* A203581 *)
%t A203582 Table[v[n + 1]/v[n], {n, 1, z}] (* A203582 *)
%K A203582 nonn
%O A203582 1,1
%A A203582 _Clark Kimberling_, Jan 04 2012