The negative Fibonacci numbers (also known as the Negafibonacci numbers) consist of the Fibonacci numbers in an alternating negative and positive pattern.
The start of the Negafibonacci sequence runs thus:
1, -1, 2, -3, 5, -8, 13, -21...
And continues in a pattern identical to the Fibonacci numbers but with alternating negative and positive numbers.
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the first seven Fibonacci numbers are 1,1,2,3,5,8,13. 13 is a Fibonacci number.
They will always follow some Fibonacci sequence. If P and Q are any two numbers, then they belong to the Fibonacci sequence with the first two numbers as P and (Q-P).
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Where do we see negative numbers
It belongs to the set of negative rational numbers, negative real numbers, fractionall numbers, rational numbers, real numbers.