import java.util.Scanner;

public class No554 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		final long mod = 1000000007;
		int n = sc.nextInt();
		long a[] = new long[n+1];
		a[0] = 0;
		a[1] = 1;
		for(int i = 2;i <= n;i++) {
			for(int j = 1;j < i;j += 2) {
				a[i] += i * a[i-j] % mod; 
			}
			a[i] %= mod;
		}
		System.out.println(a[n]);
	}
}