Print Long Sequence 1

using System;

class PrintLongSequence
{
    static void Main()
    {
        int i = 2;
        int j = -3;

        while (i <= 1001 && j > -1001)
        {
            i += 2;
            j -= 2;
            Console.Write("{0}, {1}, ", i, j);
        }
    }
}