row=int(input(“请输入行数：”))
while row>10 or row<=0:
    row=int(input(“请输入行数：”))
    
b=[[0 for i in range(0,j+1)] for j in range(0,row)]

for i in range(0,row):
    for j in range(0,i+1):
        if i==j or j==0:
            b[i][j]=1
        
        else:
            b[i][j]=b[i-1][j]+b[i-1][j-1]

            
for m in b:
    for n in m:
        print str(n)+”\t”,
    print ‘\n’