+----+----+----+----+ | 23 | | | | +----+----+----+----+ | | | 64 | | +----+----+----+----+ | | N | | | +----+----+----+----+ | | | |101 | +----+----+----+----+In the 4x4 grid provided above:
- Each the 16 values appearing in the 16 cells is a positive integer.
- The 4 values corresponding to each of the 4 rows are in arithmetic sequence.
- The 4 values corresponding to each of the 4 columns are in arithmetic sequence.