Problem 9.Print a Sequence

/*Problem 9.Print a Sequence
Write a program that prints the first 10 members of the sequence: 2, -3, 4, -5, 6, -7, ...*/

using System;
class PrintASequence
{
    static void Main()
    {
        for (int i = 1; i <=5; i++)
        {
            Console.Write(i*2);
            Console.Write(",");
            Console.Write((((i+1) * 2) - 1) * (-1));
            Console.Write(",");          
        }
    }
}