1,2
See A093883 for a discussion and guide to related sequences.
Table of n, a(n) for n=1..7.
f[j_] := j^2; z = 12;
u[n_] := Product[f[j]^2 + f[j] f[k] + f[k]^2, {j, 1, k - 1}]
v[n_] := Product[u[n], {k, 2, n}]
Table[v[n], {n, 1, z}] (* A203673 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203674 *)
Sequence in context: A172800 A013768 A182149 * A172854 A143736 A189252
Adjacent sequences: A203670 A203671 A203672 * A203674 A203675 A203676
nonn
Clark Kimberling, Jan 04 2012
approved
