Python | sympy.catalan() method - Coding

With the help of sympy.catalan() method, we can find the Catalan number in SymPy. It is denoted as –

$C_n = \frac{1}{n+1} \binom{2n}{n}$

Syntax: catalan(n) Parameter: n – It denotes the nth Catalan number. Returns: Returns the n^th Catalan number.

Example #1:

# import sympy  
from sympy import * n = 4
print("Value of n = {}".format(n)) 
   
# Use sympy.catalan() method  
nth_catalan = catalan(n)   
      
print("Value of nth catalan number : {}".format(nth_catalan))   

Output:

Value of n = 4
Value of nth catalan number : 14

Example #2:

# import sympy  
from sympy import * n = 15
print("Value of n = {}".format(n)) 
   
# Use sympy.catalan() method  
nth_catalan = catalan(n)   
      
print("Value of nth catalan number : {}".format(nth_catalan))   

Output:

Value of n = 15
Value of nth catalan number : 9694845

Reffered: https://www.geeksforgeeks.org

Python

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