The first 10 members of sequence

using System;

class MembersOfSequence
{
    static void Main()
    {
        int membersCount = 10;
        int i;

        Console.WriteLine("The first " + membersCount + " members of the sequence are:");

        for (i = 1; i <= membersCount; i++)
        {
            Console.WriteLine(i + ". " + (i + 1) * Math.Pow((-1), (i + 1)));
        }

    }
}