Number of ways of placing non-attacking knights on an n X n chessboard symmetric under horizontal reflection.
A129894
Number of ways of placing non-attacking knights on an n X n chessboard symmetric under horizontal reflection.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =26a(4) =35a(5) =821a(6) =1462a(7) =148176a(8) =221880a(9) =96574099a(10) =126381799a(11) =196582061878a(12) =269726664738
External references
- oeis: A129894