This question was asked as a puzzle in one Book of Puzzles by RS AGGARWAL, which stated the problem as to build an order N matrix where each i'th row and i'th column combined have all the elements from 1 to 2N-1.
For instance, for N=2
[3,2]
[1,3]
I want to know when is an answer possible for it for which values of N it is possible to make a matrix and how to make it?