1,2
See A093883 for a discussion and guide to related sequences.
Table of n, a(n) for n=1..8.
f[j_] := j + 1; z = 12;
v[n_] := Product[Product[f[j]^2 + f[j] f[k] + f[k]^2,
{j, 1, k - 1}], {k, 2, n}]
Table[v[n], {n, 1, z}] (* A203581 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203582 *)
Sequence in context: A110392 A107100 A233233 * A125043 A249907 A233105
Adjacent sequences: A203578 A203579 A203580 * A203582 A203583 A203584
nonn
Clark Kimberling, Jan 04 2012
approved
