Number of permutations of 0..floor((n*8-2)/2) on odd squares of an nX8 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

A215868

Number of permutations of 0..floor((n*8-2)/2) on odd squares of an nX8 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

Terms

    a(0) =1a(1) =14a(2) =110a(3) =3001a(4) =26451a(5) =767560a(6) =6812794a(7) =198409297a(8) =1761748159a(9) =51317680568a(10) =455678075546

External references