% Example 9-6: Building a matrix

n = input('Enter the number of rows: ');
m = input('Enter the number of columns: ');
A = [];
for r = 1:n
    for c = 1:m
        if r==1
            % Assign first row with column number
            A(r,c) = c;
        elseif c==1
            % Assign first column with row number
            A(r,c) = r;
        else
            % Fill in other elements with sum of
            % element above and to the left
            A(r,c) = A(r-1,c) + A(r, c-1);
        end
    end
end
A