Create lucas_function

dynamic_programming/lucas_function

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+#DEFINING THE FUNCTION
+def lucas_func(n):
+    #PREDFINING THE VALUES
+    a = 2
+    b = 1
+
+    if n == 0:
+        return a
+
+    # GENERATING THE NUMBER
+    for i in range(2, n + 1):
+        c = a + b
+        a = b
+        b = c
+
+    return b
+
+# USER INPUT
+n = int(input("Enter the position n to find the nth Lucas Number: "))
+print(f"The {n}th Lucas Number is: {lucas_func(n)}")
+
+"""
+
+THE OUTPUT:-
+Enter the position n to find the nth Lucas Number: 6
+The 6th Lucas Number is: 18
+
+"""