Fibonacci and Lucas Number Calculator 1.3

C A L C U L A T O R
For help, see lower down.
Series? Value or Range for i? Action buttons
Fibonacci(i)
Lucas(i)
Approximate(faster)
Exact(slower)
From i=
To i=
optional



Rabbit(i) Phii phii i Phi i phi
R E S U L T S

HOW TO USE THIS CALCULATOR

[Links followed from this page will open in a new window.]
  1. Select a series:
    Fibonacci(i), Lucas(i), Rabbit(i), powers or multiples of Phi or phi.
    For Fibonacci(i) and Lucas(i) you have a choice of precision: exact or approximate.

  2. Type in a whole number value for i, which can be negative except for Rabbit(i), in the From i= box.
  3. If you want to find all the values in a certain range, type a value in the To i= box also.
  4. Select an action:
    Show series
    outputs the numbers in the selected series for i in the chosen range.
    Initial digits
    Benford's Law relates to the distribution of the initial digits of Fibonacci and Lucas numbers. (Precision buttons are ignored.)
    Amaze me!
    produces a correct, random expression involving two nth-roots either whose sum is 1 or are equal, as mentioned on The Lucas numbers page.
    Clear all
    clears the RESULTS output area.
This calculator requires JavaScript (built in to your Browser).
Back to FIB Home Fibonacci Home Page

Valid HTML 4.01! © 1996-2014 Dr Ron Knott email
30 April 2014