public static void main (string[] args) {
    if (args.length != 2) {
        error ("Wrong number of arguments");
        return;
    }

    int gridSize = int.parse(args[1]);

    if (gridSize < 0 || gridSize > 224) {
        error ("Out of bounds");
        return;
    }

    int64[,] grid = new int64[gridSize+1, gridSize+1];

    //Initialise the grid with boundary conditions
    for (int i = 0; i < gridSize; i++) {
        grid[i, gridSize] = 1;
        grid[gridSize, i] = 1;
    }

    for (int i = gridSize - 1; i >= 0; i--) {
        for (int j = gridSize - 1; j >= 0; j--) {
            grid[i, j] = grid[i+1, j] + grid[i, j+1];
            print (grid[i, j].to_string () + "\t");
        }
        print ("\n");
    }

    print (grid [0, 0].to_string () + "\n");
}