1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56 28 8 1 1 9 36 84 126 126 84 36 9 1 n=int(input()) a=[[(i+1)+j*n for i in range(n)] for j in range(n)]

for t in range(n): if t%2!=0: for k in range(n//2): a[t][k],a[t][n-1-k]=a[t][n-1-k],a[t][k]

for i in range(n): for j in range(n): print(a[i][j],end=" ") print()