The number of tilings of a 7 X (3n) floor with 1 X 3 trominoes.
A236578
The number of tilings of a 7 X (3n) floor with 1 X 3 trominoes.
Terms
- a(0) =1a(1) =9a(2) =155a(3) =2861a(4) =52817a(5) =972557a(6) =17892281a(7) =329097125a(8) =6052932495a(9) =111328274273
External references
- oeis: A236578