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 A203771 #7 Jan 09 2013 04:01:22
%S A203771 2,289,9248,63266116,10249110792,554962779291904,284140942997454848,
%T A203771 62291092000572728444176,77863865000715910555220000,
%U A203771 48803803104917291287339317067776,126499457647945619016783509839675392
%N A203771 v(n+1)/v(n), where v=A203770.
%C A203771 See A093883 for a discussion and guide to related sequences.
%t A203771 f[j_] := Floor[(j + 1)/2]; z = 16;
%t A203771 u := Product[f[j]^4 + f[k]^4, {j, 1, k - 1}]
%t A203771 v[n_] := Product[u, {k, 2, n}]
%t A203771 Table[v[n], {n, 1, z}] (* A203770 *)
%t A203771 Table[v[n + 1]/v[n], {n, 1, z}] (* A203771 *)
%K A203771 nonn
%O A203771 1,1
%A A203771 _Clark Kimberling_, Jan 05 2012