Fibonacci sequence
The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding it (the first two terms are simply 1). The first few terms are .
The Fibonacci sequence can be written recursively as .
Introduction
Ratios between successive terms, ,
,
,
,
, tend towards the limit phi.
Intermediate
Binet's formula is an explicit formula used to find any nth term.
It is