# Fibonacci with Neural Network

6 views (last 30 days)
Eduardo on 7 Dec 2012
Answered: Greg Heath on 25 Sep 2014
Hello Im new in this and I want to implement a neural network that given a number returns the fibbonaci number in that position. for example:
given 3 returns 2
or
given 6 returns 8
I tried to trained it giving an input = [1 2 3 4 5 6 ...] and a target = [1 1 2 3 5 8 ....] but there's a problem.
I hope you can help me :)

Greg Heath on 9 Dec 2012
A neural net is unnecessary::
F(n) = ( ( 1 + sqrt(5 ))/2 )^n - (( 1 - sqrt(5))/2 )^n ) / sqrt(5)
Thank you for formally accepting my answer.
Greg

Pritesh Shah on 7 Dec 2012
Hi, I think you have to use different NN Network.
Please understand that for the different op we have different Input.
That is reason for failing in ur case.

Greg Heath on 7 Dec 2012
help narnet
doc narnet
Hope this helps.
Thank you for formally accepting my answer.
Greg

Greg Heath on 25 Sep 2014

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