The 
Fibonacci sequence is 
a series of 
numbers where each 
number is the sum of the two preceding ones, usually starting with 
0 and 
1. The 
sequence goes 
as follows: 
0, 
1, 
1, 
2, 
3, 
5, 
8, 13, 21, 34, 55, 89, 144, ...
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