Number of ways to arrange n non-attacking kings on an n X n board, with 2 sides identified to form a cylinder, with 1 in each row and column.
A002493
Number of ways to arrange n non-attacking kings on an n X n board, with 2 sides identified to form a cylinder, with 1 in each row and column.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =10a(5) =60a(6) =462a(7) =3920a(8) =36954a(9) =382740a(10) =4327510a(11) =53088888a(12) =702756210a(13) =9988248956a(14) =151751644590
External references
- oeis: A002493