Number of ways to move a chess rook from the lower left corner to square (n,n), with the rook moving only up or right.
A051708
Number of ways to move a chess rook from the lower left corner to square (n,n), with the rook moving only up or right.
Terms
- a(0) =1a(1) =2a(2) =14a(3) =106a(4) =838a(5) =6802a(6) =56190a(7) =470010a(8) =3968310a(9) =33747490a(10) =288654574a(11) =2480593546a(12) =21400729382a(13) =185239360178
External references
- oeis: A051708