Number of tilings of an n X n square using straight (3 X 1) trominoes and 2 X 2 tiles.
A219975
Number of tilings of an n X n square using straight (3 X 1) trominoes and 2 X 2 tiles.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =3a(5) =28a(6) =267a(7) =2744a(8) =66653a(9) =2766100a(10) =141365332a(11) =13305552648
External references
- oeis: A219975