
    In a hospital's patient monitoring system, determine the number of possible ways to organize vital sign parameters into alert groups, where each vital sign can only be part of one alert group at a time, and any number of alert groups can be created from the total number of monitored parameters. The solution should help medical staff optimize how they configure early warning systems by understanding all possible combinations of parameter groupings that could trigger distinct types of alerts.
    

    
def bell_number(n):
    """
    In a hospital's patient monitoring system, determine the number of possible ways to organize vital sign parameters into alert groups, where each vital sign can only be part of one alert group at a time, and any number of alert groups can be created from the total number of monitored parameters. The solution should help medical staff optimize how they configure early warning systems by understanding all possible combinations of parameter groupings that could trigger distinct types of alerts.
    

    """
def bell_number(n):
    """
    In a hospital's patient monitoring system, determine the number of possible ways to organize vital sign parameters into alert groups, where each vital sign can only be part of one alert group at a time, and any number of alert groups can be created from the total number of monitored parameters. The solution should help medical staff optimize how they configure early warning systems by understanding all possible combinations of parameter groupings that could trigger distinct types of alerts.
    

    """
    bell = [[0 for i in range(n + 1)] for j in range(n + 1)]
    bell[0][0] = 1
    for i in range(1, n + 1):
        bell[i][0] = bell[i - 1][i - 1]
        for j in range(1, i + 1):
            bell[i][j] = bell[i - 1][j - 1] + bell[i][j - 1]
    return bell[n][0]