A060001 a(n) = Fibonacci(n)!.

1, 1, 2, 6, 120, 40320, 6227020800, 51090942171709440000, 295232799039604140847618609643520000000, 12696403353658275925965100847566516959580321051449436762275840000000000000

Offset

1,3

Links

Harry J. Smith, Table of n, a(n) for n=1..14

Formula

From Amiram Eldar, Nov 20 2020: (Start)

a(n) = A000142(A000045(n)).

Sum_{n>=1} 1/a(n) = A327558. (End)

Mathematica

Array[Fibonacci[ # ]!&, 12] (* Vladimir Joseph Stephan Orlovsky, Nov 01 2009 *)

Prog

(PARI) a(n) = fibonacci(n)!; \\ Harry J. Smith, Jul 01 2009
(Sage) [factorial(fibonacci(n)) for n in range(0, 15)] # Zerinvary Lajos, Nov 29 2009

Crossrefs

Cf. A000045, A000142, A003266, A066526, A327558.

Sequence in context: A264470 A039716 A164955 * A181316 A101753 A288185

Adjacent sequences: A059998 A059999 A060000 * A060002 A060003 A060004

Keyword

nonn

Author

Jason Earls, Mar 14 2001

Status

approved