A203698 v(n+1)/v(n), where v=A203697.

7, 247, 59241, 76729716, 689752947387, 39249957731901417, 15252723950786921574864, 39679788989582545617673116075, 704312289520934881327209555287279697, 85070061037070760350065353912376376614050816

Offset

1,1

Comments

See A093883 for a discussion and guide to related sequences.

Links

Table of n, a(n) for n=1..10.

Mathematica

f[j_] := Fibonacci[j + 1]; z = 11;
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}]          (* A203697 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203698 *)

Crossrefs

Sequence in context: A223630 A203158 A227414 * A229482 A193371 A347843

Adjacent sequences: A203695 A203696 A203697 * A203699 A203700 A203701

Keyword

nonn

Author

Clark Kimberling, Jan 04 2012

Status

approved