What a fibonacci number?

The Fibonacci Series is a sequence of numbers produced by adding the last two numbers to get the next. It arbitrarily starts with 0, 1. The first few terms are: 0, 1, 1, 2, 3, 5, 8, 13 ... after 0, 1...

Because the sequence was discovered and studied by Fibonacci of Pisa

He was not the first to discover it. Fibonacci lived around 1200 AD. He might have discovered it independently but it was known in India from 200 BC.

The ratio is 1:2. For every even number there are 2 odd numbers. Fibonacci Series: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ... which is even, odd, odd, even, odd, odd, even, odd, odd, even, ... the pattern...

middle ages