Number of permutations of 0..floor((7*n-2)/2) on odd squares of an 7Xn array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.
A215875
Number of permutations of 0..floor((7*n-2)/2) on odd squares of an 7Xn 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) =100a(5) =2988a(6) =97289a(7) =6812794a(8) =386699176a(9) =48337803306
External references
- oeis: A215875