public void TestMethod3()
{
//Arrange
int n = 20;
long expected = 137846528820;
//Act
var res = LatticePaths.Solve(n);
//Assert
Assert.AreEqual(expected, res);
}
public void TestMethod2()
{
//Arrange
int n = 3;
int expected = 20;
//Act
var res = LatticePaths.Solve(n);
//Assert
Assert.AreEqual(expected, res);
}