
    In a delivery fleet's hexagonal zone-based routing system, where zones expand outward from a central distribution hub, calculate the total number of possible delivery points for a given zone level n. Each zone level forms a hexagonal pattern around the hub, with the hub being level 1 and subsequent levels encompassing all delivery points within that hexagonal perimeter.
    

    
def hexagonal_num(n):
    """
    In a delivery fleet's hexagonal zone-based routing system, where zones expand outward from a central distribution hub, calculate the total number of possible delivery points for a given zone level n. Each zone level forms a hexagonal pattern around the hub, with the hub being level 1 and subsequent levels encompassing all delivery points within that hexagonal perimeter.
    

    """
def hexagonal_num(n):
    """
    In a delivery fleet's hexagonal zone-based routing system, where zones expand outward from a central distribution hub, calculate the total number of possible delivery points for a given zone level n. Each zone level forms a hexagonal pattern around the hub, with the hub being level 1 and subsequent levels encompassing all delivery points within that hexagonal perimeter.
    

    """
    return n * (2 * n - 1)