Eight white kings and one red king on a 3 X 3 chessboard. G.f.: (1 + 5*x + 2*x^2)/(1 - 2*x - 11*x^2 - 6*x^3).
A179597
Eight white kings and one red king on a 3 X 3 chessboard. G.f.: (1 + 5*x + 2*x^2)/(1 - 2*x - 11*x^2 - 6*x^3).
Terms
- a(0) =1a(1) =7a(2) =27a(3) =137a(4) =613a(5) =2895a(6) =13355a(7) =62233a(8) =288741a(9) =1342175a(10) =6233899a(11) =28964169a(12) =134554277a(13) =625117807a(14) =2904117675a(15) =13491856889a(16) =62679715045a(17) =291194561919
External references
- oeis: A179597