fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();

    const DIVISOR: usize = 1_000_000_007;
    let mut dp: Vec<usize> = vec![0; n+1];
    dp[1] = 1;
    for i in 2..=n {
        //1回1回押す -> (2 * (i-1) + 1) C 2
        //2連打 -> (2 * (i-1) + 1)
        dp[i] = (2 * (i-1) + 1) * dp[i-1];
        dp[i] %= DIVISOR;
        let mut temp: usize = (2 * (i-1) + 1) * 2 * (i-1) / 2;
        temp %= DIVISOR;
        temp *= dp[i-1];
        temp %= DIVISOR;
        dp[i] += temp;
        dp[i] %= DIVISOR;
    }
    println!("{}", dp[n]);
}