Number of ways of placing non-attacking knights on an n X n chessboard symmetric about main diagonal.
A130613
Number of ways of placing non-attacking knights on an n X n chessboard symmetric about main diagonal.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =125a(5) =1089a(6) =11632a(7) =180936a(8) =3829276a(9) =122898169a(10) =5157005541a(11) =328952820944
External references
- oeis: A130613