Number of ways of placing ceiling(n/2) nonattacking queens on an n X n Mobius chessboard.
A137279
Number of ways of placing ceiling(n/2) nonattacking queens on an n X n Mobius chessboard.
Terms
- a(0) =1a(1) =4a(2) =0a(3) =16a(4) =40a(5) =192a(6) =560a(7) =3328a(8) =11772a(9) =63840a(10) =259336a(11) =1550976a(12) =7169656a(13) =42410256a(14) =234044160a(15) =1366190592
External references
- oeis: A137279