Tool to apply / check the Zeckendorf theorem stipulating that any integer can be written in the form of sum of non consecutive Fibonacci numbers also called Zeckendorf representation.

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Every natural integer $ n \in \mathbb {N} $ has a unique representation in the form of a sum of non-consecutive Fibonacci numbers. Its formula is written: $$ n = \sum_{i=0}^{k} \alpha_i F_{i} $$ with $ F_i $ the ith Fibonacci number, $ \alpha_i $ is a binary number $ 0 $ or $ 1 $ (a way to indicate that the number of Fibonacci is in the sum, or it is not) and $ \alpha_i \times \alpha_{i + 1} = 0 $ (a way to prevent 2 numbers consecutive Fibonacci).

This proprety is used in Fibonacci coding (a binary representation of any integer based on the values of $ \alpha_i $ in the formula above)

How to calculate a Zeckendorf representation?

Enter a value of a number $ N $ and dCode will do the calculation automatically.

Example:10000 is the sum of $ 6765 + 2584 + 610 + 34 + 5 + 2 $, respectively the 20th, 18th, 15th, 9th, 5th and 3rd Fibonacci numbers

Algorithmically, dCode uses Binet's formula to obtain Fibonacci numbers close to a given number and subtracts them recursively until finding the Zeckendorf representation.

Source code

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