Number of ways to place n nonattacking composite pieces queen + leaper[3,5] on an n X n chessboard.

A189871

Number of ways to place n nonattacking composite pieces queen + leaper[3,5] on an n X n chessboard.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =2a(4) =10a(5) =0a(6) =8a(7) =24a(8) =72a(9) =116a(10) =384a(11) =1660a(12) =7344a(13) =24364a(14) =130408a(15) =743360a(16) =4242704a(17) =27018788a(18) =190618152a(19) =1431986780a(20) =11053915716

External references