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 A203754 #7 Jan 14 2013 04:50:13
%S A203754 1,1,6,12,147,441,8112,32448,796005,3980025,122054688,732328128,
%T A203754 26950548807,188653841649,8099902347264,64799218778112,
%U A203754 3179644775178921,28616802976610289,1579734079664832000,15797340796648320000
%N A203754 Square root of A203753(n).
%t A203754 f[j_] := Floor[j/2]; z = 20;
%t A203754 u := Product[f[j]^2 - f[j] f[k] + f[k]^2, {j, 1, k - 1}]
%t A203754 v[n_] := Product[u, {k, 2, n}]
%t A203754 Table[v[n], {n, 1, z}] (* A203752 *)
%t A203754 Table[v[n + 1]/v[n], {n, 1, z}] (* A203753 *)
%t A203754 Table[Sqrt[v[n + 1]/v[n]], {n, 1, z}] (* A203754 *)
%Y A203754 Cf. A093883.
%K A203754 nonn
%O A203754 1,3
%A A203754 _Clark Kimberling_, Jan 05 2012