import java.math.BigInteger;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		BigInteger N = new BigInteger(scanner.next());
		BigInteger two = new BigInteger("2");
		BigInteger three = new BigInteger("3");
		BigInteger mod = new BigInteger("1000007");
		System.out
				.println((N.add(three).divide(two).multiply(N.add(two).divide(two)).subtract(BigInteger.ONE)).mod(mod));
	}

}