A131612 (Fibonacci(n)^(n+1)-1)/(Fibonacci(n)-1).

1, 2, 3, 15, 121, 3906, 299593, 67977560, 39714002329, 62556901638175, 257985813269495081, 2806709131423433412540, 80052769211806164721787281, 5990939163682951316587217125254, 1174714712853607653027182667701045767, 603476089599958368340121395090311986863711

Offset: 0

Author

Roger L. Bagula and Gary W. Adamson, May 27 2008

Keywords

• nonn

Comments

Row sums of A131606 and A131609.

Programs

Mathematica

f[n_]:=Module[{fn=Fibonacci[n]},(fn^(n+1)-1)/(fn-1)]; Join[{1,2,3},f/@Range[3,20]]  (* Harvey P. Dale, Mar 01 2011 *)

Extensions

Edited by N. J. A. Sloane, May 28 2008