A series of whole numbers in which each number is the sum of the two preceding ones: 1, 1, 2, 3, 5, 8, 13, etc. Fibonacci numbers are used in a variety of algorithms, including stock market analysis.

Fibonacci retracements are popular among technical traders. They are based on the key numbers identified by mathematician ...

The Fibonacci sequence is a series of numbers beginning with 1 in which each successive number is the sum of the two previous numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377 ...

2 21 is a triangle number – it is the sum of the first six whole numbers (1+2+3+4+5+6=21). 3 21 is the eighth number in the Fibonacci sequence, where each number is the sum of the two preceding ...