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 A203588 #11 Nov 26 2021 06:38:08
%S A203588 7,399,62049,18796113,9385475463,6989994912159,7264350232509825,
%T A203588 10045045412133360993,17833797760578200512839,
%U A203588 39538255667229582221666799,107060230015204789813170342753,347683557620810765411565611000625
%N A203588 a(n) = v(n+1)/v(n), where v=A203587.
%C A203588 See A093883 for a discussion and guide to related sequences.
%t A203588 f[j_] := 2 j - 1; z = 12;
%t A203588 v[n_] := Product[Product[f[j]^2 - f[j] f[k] + f[k]^2,
%t A203588 {j, 1, k - 1}], {k, 2, n}]
%t A203588 Table[v[n], {n, 1, z}] (* A203587 *)
%t A203588 Table[v[n + 1]/v[n], {n, 1, z}] (* A203588 *)
%Y A203588 Cf. A093883, A203587, A203588.
%K A203588 nonn,easy
%O A203588 1,1
%A A203588 _Clark Kimberling_, Jan 04 2012
%E A203588 Definition corrected by _Georg Fischer_, Nov 26 2021