Number of tilings of a 4 X n rectangle using dominoes and right trominoes.
A165791
Number of tilings of a 4 X n rectangle using dominoes and right trominoes.
Terms
- a(0) =1a(1) =1a(2) =11a(3) =55a(4) =380a(5) =2319a(6) =15171a(7) =96139a(8) =619773a(9) =3962734a(10) =25445515a(11) =163048957a(12) =1045897075a(13) =6705473761a(14) =43001795070a(15) =275730928993
External references
- oeis: A165791