Skip to main content
Fibonacci number

Fibonacci number

1 6.8
A number in a list where each equals the sum of the two before, starting with 0 and 1
  • noun
  • /ˌfɪbəˈnɑːtʃi ˈnʌmbər/
  • Specialized
translation icon : número de Fibonacci
  • So this is a terrible way to compute the NTH Fibonacci number exponential.

So this is a terrible way to compute the NTH Fibonacci number exponential.

Autoplay Next

Examples

  • This series corresponds to certain patterns in nature; the number of petals on a flower, for example, will tend to be a Fibonacci number.

    Academic text (2017)
  • OK, So what has that angle got to do with Fibonacci numbers and the sunflower spirals?

  • Those are Fibonacci numbers.

  • What is the way to know how much time is needed for computation of the n-th Fibonacci number on the current machine?

    Blog text (4)
  • If we take the NTH random Fibonacci number and make it positive, and we took the NTH route.

  • I'm going to give you a program for calculating the NTH Fibonacci number in this model.

  • The clever thing about Bach's name is that the numeric value of the individual letters are all Fibonacci numbers.

  • For example, if you start counting just petals on flowers, you won't always get Fibonacci numbers, but by golly, you get a lot of them.

  • A Fibonacci number is defined as the sum of the two preceding numbers, starting with 0 and 1.

  • The seventh Fibonacci number, 13, is often found in natural phenomena, such as the arrangement of leaves on a stem.

Surface Forms

Morphology

Fibonacci + number

This is opaque because 'Fibonacci' is a proper name with no independent lexical meaning that signals the recursive rule; knowing 'number' alone does not allow a learner to infer the specific definition (each term is the sum of the previous two). Only prior exposure to the mathematical concept or the proper name would enable understanding, so the overall meaning is not derivable from the constituents.

Etymology

Fibonacci number comes from a simple story by a man called Fibonacci about rabbits that breed each month. Each month the number of rabbit pairs equals the 'sum' of the two months before, so a Fibonacci number is a number made by 'adding' the two numbers before it.