public void BinomialTest()
{
int n = 63;
int k = 6;
double expected = 67945521;
double actual;
actual = Special.Binomial(n, k);
Assert.AreEqual(expected, actual);
n = 42;
k = 12;
expected = 11058116888;
actual = Special.Binomial(n, k);
Assert.AreEqual(expected, actual);
}