Python | sympy.catalan() method

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

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