#Python3 纯数学解法,通过打印空值换行 n=int(input()) x=0 for j in range(0,n): for i in range(1,n+1-j): x=x+i+j if j==0: print(x,end=' ') else: print(int(x-1),end=' ') x=((j+1)**2-(j+1)+2)/2 print()