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 A203767 #7 Jan 09 2013 03:56:57
%S A203767 2,25,200,16900,304200,72250000,2312000000,1104760757776,
%T A203767 55238037888800,44628759527040000,3213270685946880000,
%U A203767 3948896391660025000000,386991846382682450000000,673918119287694361600000000
%N A203767 v(n+1)/v(n), where v=A203766.
%C A203767 See A093883 for a discussion and guide to related sequences.
%t A203767 f[j_] := Floor[(j + 1)/2]; z = 16;
%t A203767 u := Product[f[j]^2 + f[k]^2, {j, 1, k - 1}]
%t A203767 v[n_] := Product[u, {k, 2, n}]
%t A203767 Table[v[n], {n, 1, z}] (* A203766 *)
%t A203767 Table[v[n + 1]/v[n], {n, 1, z}] (* A203767 *)
%K A203767 nonn
%O A203767 1,1
%A A203767 _Clark Kimberling_, Jan 05 2012