Number of tilings of a 4 X n rectangle using monominoes and trominoes of any shape.
A270064
Number of tilings of a 4 X n rectangle using monominoes and trominoes of any shape.
Terms
- a(0) =1a(1) =3a(2) =45a(3) =590a(4) =7517a(5) =96176a(6) =1238818a(7) =15913695a(8) =204383373a(9) =2626057921a(10) =33738191906a(11) =433438712623
External references
- oeis: A270064