The number of tilings of an n X n rectangle using integer length rectangles with at least one side of length 1, i.e., tiles are of size (1 X i) or (i X 1) with 1<=i<=n.
A254127
The number of tilings of an n X n rectangle using integer length rectangles with at least one side of length 1, i.e., tiles are of size (1 X i) or (i X 1) with 1<=i<=n.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =257a(4) =50128a(5) =50796983a(6) =264719566561
External references
- oeis: A254127