#include <bits/stdc++.h>

using namespace std;
const int N = 110;
int a[N][N];
int x = 20, w;
// 测试数据 6

int main() {
    cin >> w;
    //构建蛇形矩阵
    for (int i = 1; i <= x * w; i++) {
        int r, c;
        r = (i - 1) / w;
        c = (i - 1) % w;
        a[r][c] = i;
    }
    //输出构建结果
    for (int i = 0; i < x; i++) {
        for (int j = 0; j < w; j++)
            printf("%3d ", a[i][j]);
        printf("\n");
    }
    return 0;
}