Fibonacci, also known as Leonardo of Pisa, formally introduced the sequence to Western mathematics in his 1202 book Liber Abaci (Book of Calculation). The sequence begins with 0 and 1, with each ...

Fibonacci explained his findings in a book called Liber Abaci, published in 1202, which had a section devoted to the intriguing sequence which would be named after him hundreds of years later.

Fibonacci today is remembered for two major advances in mathematics, both found in his book Liber Abaci (The Book of Calculation), published in 1202. Ironically, he created neither of them.