Extension To Negative Integers
Using Fn-2 = Fn - Fn-1, one can extend the Fibonacci numbers to negative integers. So we get: ... -8, 5, -3, 2, -1, 1, 0, 1, 1, 2, 3, 5, 8, ... and F-n = -(-1)nFn.
See also Negafibonacci.
Read more about this topic: Generalizations Of Fibonacci Numbers
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