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A333125 a(n) = binomial(Fibonacci(n),n). 1

%I #17 Mar 11 2020 11:56:04

%S 1,1,0,0,0,1,28,1716,203490,52451256,29248649430,36519676207704,

%T 103619293824707388,681222021538453426360,10526080837282875691177000,

%U 387340445158332035685509830240,34306348668342682111244774082795555,7379087300345635546662027722168990277849

%N a(n) = binomial(Fibonacci(n),n).

%H Andrew Nelson, <a href="/A333125/b333125.txt">Table of n, a(n) for n = 0..50</a>

%F a(n) ~ phi^(n^2) * exp(n) / (sqrt(2*Pi) * 5^(n/2) * n^(n + 1/2)), where phi = A001622 = (1+sqrt(5))/2 is the golden ratio.

%t Table[Binomial[Fibonacci[n], n], {n, 0, 20}]

%o (PARI) a(n) = binomial(fibonacci(n), n); \\ _Michel Marcus_, Mar 10 2020

%Y Cf. A000045, A014070.

%K nonn

%O 0,7

%A _Vaclav Kotesovec_, Mar 08 2020, following a suggestion of _Andrew Nelson_

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Last modified August 19 14:51 EDT 2024. Contains 375302 sequences. (Running on oeis4.)