def dynamic_triangle(n):
    """
    Generates a dynamic triangle pattern for odd numbers (excluding 1) 
    and negative numbers.
 
    Args:
        n: The input number (must be an odd number greater than 1 or a 
           negative number).
    """
 
    if n < 0 or n % 2 == 0:
        print("Input must be an odd number greater than 1 or a negative number.")
        return
 
    if n == 1:
        print("Input cannot be 1.")
        return
 
    for i in range(1, n + 1, 2):
        print(" " * ((n - i) // 2), "*" * i)
 
# Example usage
print("Dynamic triangle pattern for 5:")
dynamic_triangle(5)
 
print("\nDynamic triangle pattern for 9:")
dynamic_triangle(9)
 
print("\nDynamic triangle pattern for -3:")
dynamic_triangle(-3)
 
print("\nInput validation example:")
dynamic_triangle(4)
 
print("\nInput validation example:")
dynamic_triangle(1)

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