Number of ways to place 6n nonattacking kings on a 12 X 2n cylindrical chessboard.

A194648

Number of ways to place 6n nonattacking kings on a 12 X 2n cylindrical chessboard.

Terms

    a(0) =448a(1) =1732a(2) =7918a(3) =39316a(4) =205628a(5) =1118398a(6) =6286658a(7) =36383284a(8) =216134044a(9) =1314160492a(10) =8155899320a(11) =51526819510a(12) =330559583178

External references