Number of ways to place 7 nonattacking queens on an n X n board.
A178721
Number of ways to place 7 nonattacking queens on an n X n board.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =40a(7) =3192a(8) =119180a(9) =2119176a(10) =23636352a(11) =186506000a(12) =1131544008a(13) =5613017128a(14) =23670094984a(15) =87463182432a(16) =289367715488a(17) =872345119896
External references
- oeis: A178721