added math import

Rishabh Bafna · Rishabh Bafna · commit d48be41da931 · 2025-10-24T15:40:49.000+05:30
diff --git a/maths/series/catalan_numbers.py b/maths/series/catalan_numbers.py
@@ -9,6 +9,7 @@
 """
 
 from __future__ import annotations
+import math
 
 def catalan_numbers(count: int) -> list[int]:
     """
