Number of 2n-move closed zebra paths on an unbounded chessboard from a given square to the same square.
A254459
Number of 2n-move closed zebra paths on an unbounded chessboard from a given square to the same square.
Terms
- a(0) =1a(1) =8a(2) =168a(3) =5120a(4) =190120a(5) =8039808a(6) =373369920a(7) =18576523680a(8) =972362837160
External references
- oeis: A254459