Maximal determinant (Hugo Pfoertner)Discuss about this problem
A085000: 1,10,412,40800,6839492,1865999570
maximal determinant of an n X n matrix using the integers 1 to n^2 spent more than 2 years of CPU time to get a current lower bound for a(7)>=762140212575 and much less time for a(8)>=440857916120379
Fill a NxN matrix with numbers from 1...N^2, so that its determinant is the biggest possible.