
    Design an algorithm that determines the total number of unique ways to organize learning concepts into adaptive difficulty groups, where each concept must be assigned to exactly one group and any number of groups can be formed. The number of possible arrangements will help create flexible learning paths that can adapt to different student learning patterns.
    

    
def bell_number(n):
    """
    Design an algorithm that determines the total number of unique ways to organize learning concepts into adaptive difficulty groups, where each concept must be assigned to exactly one group and any number of groups can be formed. The number of possible arrangements will help create flexible learning paths that can adapt to different student learning patterns.
    

    """
def bell_number(n):
    """
    Design an algorithm that determines the total number of unique ways to organize learning concepts into adaptive difficulty groups, where each concept must be assigned to exactly one group and any number of groups can be formed. The number of possible arrangements will help create flexible learning paths that can adapt to different student learning patterns.
    

    """
    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]