Number of ways to place 9 nonattacking kings on an n X n toroidal board.
A180067
Number of ways to place 9 nonattacking kings on an n X n toroidal board.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =28a(6) =81095a(7) =42752576a(8) =2436444603a(9) =53633024900a(10) =666519047964
External references
- oeis: A180067