Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 - 2*x)/(1 - 6*x + 2*x^2).
A180034
Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 - 2*x)/(1 - 6*x + 2*x^2).
Terms
- a(0) =1a(1) =4a(2) =22a(3) =124a(4) =700a(5) =3952a(6) =22312a(7) =125968a(8) =711184a(9) =4015168a(10) =22668640a(11) =127981504a(12) =722551744a(13) =4079347456a(14) =23030981248a(15) =130027192576a(16) =734101192960
External references
- oeis: A180034