Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 + 2*x)/(1 - 6*x - 2*x^2).
A180029
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) =8a(2) =50a(3) =316a(4) =1996a(5) =12608a(6) =79640a(7) =503056a(8) =3177616a(9) =20071808a(10) =126786080a(11) =800860096a(12) =5058732736a(13) =31954116608a(14) =201842165120
External references
- oeis: A180029