Number of open knight's tour diagrams of a 3 X n chessboard that have "type X": both endpoints occur in the same column.
A169770
Number of open knight's tour diagrams of a 3 X n chessboard that have "type X": both endpoints occur in the same column.
Terms
- a(0) =4a(1) =0a(2) =0a(3) =0a(4) =80a(5) =40a(6) =368a(7) =352a(8) =5296a(9) =3744a(10) =48656a(11) =40208a(12) =523808a(13) =415488a(14) =5270976a(15) =4333504a(16) =54215264a(17) =44497728a(18) =551297184a(19) =458337984a(20) =5613555008a(21) =4691821600a(22) =56981627840a(23) =47988689152a(24) =577641089664a(25) =489273948160
External references
- oeis: A169770