Number of tilings of a 3 X n rectangle using 2 X 2 and 1 X 1 tiles and right trominoes.
A353965
Number of tilings of a 3 X n rectangle using 2 X 2 and 1 X 1 tiles and right trominoes.
Terms
- a(0) =1a(1) =1a(2) =13a(3) =47a(4) =259a(5) =1189a(6) =5877a(7) =28167a(8) =136723a(9) =660173a(10) =3194613a(11) =15445007a(12) =74699811a(13) =361230229a(14) =1746933205a(15) =8448061879a(16) =40854753875a(17) =197572345789a(18) =955455626773
External references
- oeis: A353965