Number of ways to place 6 nonattacking grasshoppers on a toroidal chessboard of size n x n.
A190401
Number of ways to place 6 nonattacking grasshoppers on a toroidal chessboard of size n x n.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =384a(4) =19100a(5) =557808a(6) =5841780a(7) =41338400a(8) =209264796a(9) =859752800a(10) =2982181004a(11) =9131392296a(12) =25196132260a(13) =63968987264a(14) =151223202900a(15) =336724832384a(16) =711538908572
External references
- oeis: A190401