递归输出矩阵

import numpy as np

def main(n):
    if n==0:
        return np.array([1])
    elif n==1:
        return np.array([[1,1], [1,0]])

    ret = np.tile(main(n-1), (2,2))
    #print(ret) 
    return ret


if __name__ == '__main__':
    for i in range(5):
        print(main(i))