The -polynomials
 obtained by setting 
 and 
 in the Lucas polynomial sequence. The
 first few Fermat polynomials are
| 
(1)
 | |||
| 
(2)
 | |||
| 
(3)
 | |||
| 
(4)
 | |||
| 
(5)
 | 
The Fermat polynomials satisfy
| 
(6)
 | 
where 
 are called Fermat numbers.
 
         
	    
	
    

