Total number of V shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.

A247742

Total number of V shapes in all tilings of a 5 X n rectangle with pentominoes of any shape.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =20a(4) =192a(5) =1568a(6) =12636a(7) =114216a(8) =1022604a(9) =8640980a(10) =72406668a(11) =605996308a(12) =5065065936a(13) =42045917448a(14) =346705312932

External references