Number of ways to place 4n nonattacking kings on an 8 X 2n cylindrical chessboard.
A194646
Number of ways to place 4n nonattacking kings on an 8 X 2n cylindrical chessboard.
Terms
- a(0) =80a(1) =276a(2) =1082a(3) =4460a(4) =18890a(5) =81606a(6) =358564a(7) =1599820a(8) =7238864a(9) =33175486a(10) =153802520a(11) =720390254a(12) =3404944506a(13) =16221905696a(14) =77820675992a(15) =375564803020
External references
- oeis: A194646