Total number of U shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.
A247741
Total number of U shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =18a(4) =144a(5) =1196a(6) =10122a(7) =92280a(8) =821038a(9) =6991890a(10) =58992846a(11) =496243152a(12) =4159529298a(13) =34612046520a(14) =286233965312
External references
- oeis: A247741