Fibonacci sequences are named after a merchant, one Leonardo of
Pisa who had the nickname Fibonacci. On his travels, around 1200
AD, he learnt a lot of mathematics (particularly algebra) from the
The Arabs had developed the study of mathematics for about 800
years after the fall of the Greek and Roman civilisations. The
story behind the methods in this problem spans this whole period.
Equations in which one seeks whole number solutions, are called
Diophantine equations after Diophantus (250 A.D) who developed the
method and a special notation for recording it.
For more about the stories of Diophantus and Fibonacci see the