Number of permutations of 0..floor((n*n-2)/2) on odd squares of an n X n array such that each row and column of odd squares is increasing.
A215293
Number of permutations of 0..floor((n*n-2)/2) on odd squares of an n X n array such that each row and column of odd squares is increasing.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =280a(4) =23100a(5) =85765680a(6) =577185873264
External references
- oeis: A215293