fn main() {
    let mut n = read::<i64>();
    for j in 0..n {
        for i in 0..n {
            print!("{} ", (n - i + 2 * j) % n + 1);
        }
        println!("");
    }
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}