static void Main(string[] args)
{
BigInteger[] index = new BigInteger[(100 - 1) * (100 - 1)];
for (int a = 2; a <= 100; a++) // Outer for loop a
for (int b = 2; b <= 100; b++) // Inner for loop b
index[(100 - 1) * (a - 2) + (b - 2)] = BigInteger.Pow(a, b);
// Sort out and find all unique elemengts
BigInteger[] onlyUnique = index.Distinct().ToArray();
Console.WriteLine("Nbr of unique elements are: {0}", onlyUnique.Length);
}
