A281450 a(n) = Fibonacci(binomial(2*n,n)).

1, 1, 8, 6765, 190392490709135, 20672849399056463095319772838289364792345825123228624

Offset: 0

Author

Alois P. Heinz, Jan 21 2017

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..7

Crossrefs

Main diagonal of A045995.

Cf. A000045, A000984, A007318, A273397.

Programs

Maple

a:= n-> (<<0|1>, <1|1>>^binomial(2*n, n))[1, 2]:
seq(a(n), n=0..6);

Formula

a(n) = A000045(A007318(2*n,n)) = A000045(A000984(n)).

a(n) = A045995(n,n).