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%I #7 Jan 14 2013 03:52:54
%S 13,500,40426,5709600,1256804900,399383584000,173474742285000,
%T 98872482630272000,71645799536067250000,64368175738481971200000,
%U 70249051303937073666500000,91567621291850074309120000000
%N v(n+1)/v(n), where v=A203585.
%C See A093883 for a discussion and guide to related sequences.
%t f[j_] := j + 1; z = 12;
%t v[n_] := Product[Product[f[j]^2 + f[k]^2, {j, 1, k - 1}], {k, 2, n}]
%t Table[v[n], {n, 1, z}] (* A203585 *)
%t Table[v[n + 1]/v[n], {n, 1, z}] (* A203586 *)
%K nonn
%O 1,1
%A _Clark Kimberling_, Jan 04 2012
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