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Entringer Number | Return Entringer Number E ( n , k ).
Base cases.
Finding dp [ i ] [ j ].
Driven Program"
Solution in Python:

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Give me a code to entringer Number and the other steps required?
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#Here is code to entringer Number and the other steps required.
 def zigzag ( n , k ) :
	dp = [ [ 0 for x in range ( k + 1 ) ] for y in range ( n + 1 ) ]
	dp [ 0 ] [ 0 ] = 1
	for i in range ( 1 , n + 1 ) :
		dp [ i ] [ 0 ] = 0
	for i in range ( 1 , n + 1 ) :
		for j in range ( 1 , k + 1 ) :
			dp [ i ] [ j ] = ( dp [ i ] [ j - 1 ] + dp [ i - 1 ] [ i - j ] )
	return dp [ n ] [ k ]
n = 4
k = 3
print ( zigzag ( n , k ) )