The number of tilings of a 4 X n rectangle using integer length rectangles with at least one side of length 1, i.e., tiles are 1 X 1, 1 X 2, ..., 1 X n, 2 X 1, 3 X 1, 4 X 1.
A254125
The number of tilings of a 4 X n rectangle using integer length rectangles with at least one side of length 1, i.e., tiles are 1 X 1, 1 X 2, ..., 1 X n, 2 X 1, 3 X 1, 4 X 1.
Terms
- a(0) =1a(1) =8a(2) =124a(3) =2408a(4) =50128a(5) =1064576a(6) =22734496a(7) =486248000a(8) =10404289216a(9) =222647030144
External references
- oeis: A254125