N = int(input())
A = [[0 for _ in range(N)] for _ in range(N)]
for i in range(N):
    A[i][i] = i+1
for i in range(N):
    if i<=N//2:
        j0 = N+2*i
    else:
        j0 = 2*i-N
    for j in range(max(2*i-N+1,0),min(2*i,N-1)+1):
        A[2*i-j][j] = A[i][i]
    for j in range(max(j0-N+1,0),min(j0,N-1)+1):
        A[j0-j][j] = A[i][i]
for i in range(N):
    print(*A[i])