A005921 From solution to a difference equation.

1, 3, 10, 48, 312, 2520, 24480, 277200, 3588480, 52254720, 845510400, 15048633600, 292190976000, 6146069529600, 139223731046400, 3379030566912000, 87478184521728000, 2406225451069440000, 70080382582898688000

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

References

• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• P. R. J. Asveld and N. J. A. Sloane, Correspondence, 1987.
• P. R. J. Asveld, Another family of Fibonacci-like sequences, Fib. Quart., 25 (1987), 361-364.

Crossrefs

Cf. A000045, A000142.

Formula

For n >= 1, a(n) = Fibonacci(n+3)*n!. - David W. Wilson, May 15 1997

For n >= 3, a(n) = n*(a(n-1)+a(n-2)*(n-1)). - Christian Krause, Dec 15 2024

Extensions

More terms from David W. Wilson, May 15 1997