I can create a table of the squares of integers like this
In[1]:= t = Table[{i, i^2}, {i, 10}]
Out[1]= {{1, 1}, {2, 4}, {3, 9}, {4, 16}, {5, 25}, {6, 36}, {7,
49}, {8, 64}, {9, 81}, {10, 100}}
I want to write it to a text file, so the data looks like this
1 1
2 4
3 9
4 16
5 25
6 36
7 49
8 64
9 81
10 100
I would have thought "Export" could do this, but I could not find the right format Eventually I used "sed" on a Linux system to remove the braces and commas that I got when I exported the data to a file.