human
Write me a code to entringer Number and the other steps required given the following:
Entringer Number | Return Entringer Number E ( n , k ).
Base Case.
Base Case.
Recursive step.
Driven Program"
Solution in Python:
assistant
#Here is code to entringer Number and the other steps required.
 def zigzag ( n , k ) :
	if ( n == 0 and k == 0 ) :
		return 1
	if ( k == 0 ) :
		return 0
	return zigzag ( n , k - 1 ) + zigzag ( n - 1 , n - k ) ;
n = 4
k = 3
print ( zigzag ( n , k ) )