The original Liber Abaci dates back to 1202 CE.
 They are named after the Italian mathematician Leonardo of Pisa, later known as Fibonacci, who introduced the sequence to Western European mathematics in his 1202 book Liber Abaci
== External links ==Pisano, Leonardo (1202), Incipit liber Abbaci compositus to Lionardo filio Bonaccii Pisano in year Mccij [Manuscript], Museo Galileo

