Number of open knight's tour diagrams of a 3 X n chessboard that have "type B": the endpoints occur in different columns and disagree in color with the cells in the nearest corner.
A169772
Number of open knight's tour diagrams of a 3 X n chessboard that have "type B": the endpoints occur in different columns and disagree in color with the cells in the nearest corner.
Terms
- a(0) =2a(1) =0a(2) =0a(3) =0a(4) =92a(5) =0a(6) =1064a(7) =0a(8) =14928a(9) =0a(10) =156416a(11) =0a(12) =1785600a(13) =0a(14) =19416704a(15) =0a(16) =211014544a(17) =0a(18) =2261999424a(19) =0a(20) =24067157192a(21) =0a(22) =254242274472a(23) =0a(25) =0
External references
- oeis: A169772