Number of tilings of an 8 X n rectangle using straight (3 X 1) trominoes and 2 X 2 tiles.
A219972
Number of tilings of an 8 X n rectangle using straight (3 X 1) trominoes and 2 X 2 tiles.
Terms
- a(0) =1a(1) =0a(2) =4a(3) =19a(4) =70a(5) =456a(6) =2530a(7) =12343a(8) =66653a(9) =372429a(10) =1910822a(11) =10162059a(12) =55583124a(13) =291195073a(14) =1550518247a(15) =8363883923a(16) =44269140576a(17) =235940940726
External references
- oeis: A219972