Number of 2n-move closed antelope paths on an unbounded chessboard from a given square to the same square.

A307347

Number of 2n-move closed antelope 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) =7939008a(6) =357713664a(7) =17010543264a(8) =842994009000

External references