# What is the name of the sequence in which each number is the sum of the two preceding ones?

Fibonacci Sequence

The Fibonacci Sequence, named after the Italian mathematician Leonardo of Pisa, also known as Fibonacci, is one of the most famous and fascinating numerical sequences in mathematics. Starting with 0 and 1, each subsequent number is the sum of the two preceding ones, resulting in an infinite series of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, etc. This sequence reveals a surprising pattern that appears in many aspects of nature, such as the arrangement of leaves, tree branches, the layout of flower petals, and even the shapes of galaxies. Fibonacci himself introduced this sequence to the West in his book "Liber Abaci" in 1202, but it was already known in India several centuries earlier.