A polynomial that represents integers for all integer values of the variables. An integer polynomial is a special case of such
 a polynomial. In general, every integer representing polynomial  of degree 
 in the variable 
 can be written in the form
where 
 is a binomial coefficient and 
, 
, ..., 
 are integers (Nagell 1951, p. 121).
 
         
	    
	
    
