Number of ways to place 5n nonattacking kings on a 10 X 2n cylindrical chessboard.
A194647
Number of ways to place 5n nonattacking kings on a 10 X 2n cylindrical chessboard.
Terms
- a(0) =192a(1) =708a(2) =3036a(3) =13932a(4) =66532a(5) =327192a(6) =1649420a(7) =8500668a(8) =44693472a(9) =239238888a(10) =1301236304a(11) =7177627944a(12) =40078823652a(13) =226167613792
External references
- oeis: A194647