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A131612 (Fibonacci(n)^(n+1)-1)/(Fibonacci(n)-1). 2
1, 2, 3, 15, 121, 3906, 299593, 67977560, 39714002329, 62556901638175, 257985813269495081, 2806709131423433412540, 80052769211806164721787281, 5990939163682951316587217125254, 1174714712853607653027182667701045767, 603476089599958368340121395090311986863711 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums of A131606 and A131609.

LINKS

Table of n, a(n) for n=0..15.

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 *)

CROSSREFS

Sequence in context: A238711 A165657 A091835 * A297421 A180723 A162102

Adjacent sequences:  A131609 A131610 A131611 * A131613 A131614 A131615

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

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

STATUS

approved

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Last modified March 25 10:16 EDT 2019. Contains 321470 sequences. (Running on oeis4.)