A203743 v(n+1)/v(n), where v=A203742.

3, 49, 3211, 1836471, 5601269268, 126224789371821, 18172730429870356071, 18165994225387223595663024, 122253429876903823048050870627075, 5642245751352209334312275747406397652667

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]; z = 11;
u := Product[f[j]^2 + f[j] f[k] + f[k]^2, {j, 1, k - 1}]
v[n_] := Product[u, {k, 2, n}]
Table[v[n], {n, 1, z}]          (* A203742 *)
Table[v[n + 1]/v[n], {n, 1, z}] (* A203743 *)

Crossrefs

Sequence in context: A106842 A298697 A326218 * A086459 A180602 A326342

Adjacent sequences: A203740 A203741 A203742 * A203744 A203745 A203746

Keyword

nonn

Author

Clark Kimberling, Jan 05 2012

Status

approved