Number of tilings of a 3 X 4n rectangle with 3n tetrominoes of any shape.
A232757
Number of tilings of a 3 X 4n rectangle with 3n tetrominoes of any shape.
Terms
- a(0) =1a(1) =23a(2) =997a(3) =44855a(4) =2023309a(5) =91286913a(6) =4118731453a(7) =185831471351
External references
- oeis: A232757