Number of tilings of a 5 X n rectangle using n pentominoes of any but the U shape.
A247772
Number of tilings of a 5 X n rectangle using n pentominoes of any but the U shape.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =39a(4) =369a(5) =2908a(6) =19185a(7) =137200a(8) =1022915a(9) =7606043a(10) =55699672a(11) =405617356a(12) =2969215193a(13) =21791407596a(14) =159806458014
External references
- oeis: A247772