Number of permutations of 0..floor((6*n-2)/2) on odd squares of an 6Xn array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.
A215874
Number of permutations of 0..floor((6*n-2)/2) on odd squares of an 6Xn array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =8a(4) =50a(5) =1233a(6) =15485a(7) =767560a(8) =14296434a(9) =1124811332
External references
- oeis: A215874