Number of ways to place n nonattacking composite pieces queen + leaper[1,3] on an n X n chessboard.
A189864
Number of ways to place n nonattacking composite pieces queen + leaper[1,3] on an n X n chessboard.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =4a(10) =56a(11) =176a(12) =1932a(13) =4188a(14) =26960a(15) =182456a(16) =1132064a(17) =7645784a(18) =58695136a(19) =470822912a(20) =3792417988a(21) =32440237692
External references
- oeis: A189864