A262189 a(n) = Fibonacci(n+1)! / Fibonacci(n).

1, 2, 3, 40, 8064, 778377600, 3930072474746880000, 14058704716171625754648505221120000000

Offset: 1

Author

Altug Alkan, Sep 14 2015

Keywords

• nonn
• easy

Examples

			For n=2, a(n) = Fibonacci(n+1)! / Fibonacci(n) = 2! / 1 = 2.
		

Crossrefs

Cf. A060001, A000045.

Programs

Magma

[Factorial(Fibonacci(n+1)) / Fibonacci(n): n in [1..10]]; // Vincenzo Librandi, Sep 15 2015

Mathematica

Array[Fibonacci[# + 1]!/Fibonacci@ # &, {8}] (* Michael De Vlieger, Sep 14 2015 *)

PARI

a(n) = fibonacci(n+1)!/fibonacci(n);
vector(10, n, a(n))

Formula

a(n) = A060001(n+1) / A000045(n).