Number of tilings of a 6 X 2n rectangle with 3n tetrominoes of any shape.
A232684
Number of tilings of a 6 X 2n rectangle with 3n tetrominoes of any shape.
Terms
- a(0) =1a(1) =9a(2) =2003a(3) =178939a(4) =22483347a(5) =2569437089a(6) =304446920314
External references
- oeis: A232684