Number of ways to place 6 nonattacking grasshoppers on an n x n chessboard.
A190579
Number of ways to place 6 nonattacking grasshoppers on an n x n chessboard.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =998a(4) =51618a(5) =873852a(6) =8039322a(7) =50272978a(8) =240764814a(9) =947860554a(10) =3210392210a(11) =9649651136a(12) =26316155354a(13) =66191981440a(14) =155482089002a(15) =344411086374a(16) =725043524246
External references
- oeis: A190579