Number of tilings of a 9 X n rectangle using dominoes and straight (3 X 1) trominoes.
A219872
Number of tilings of a 9 X n rectangle using dominoes and straight (3 X 1) trominoes.
Terms
- a(0) =1a(1) =5a(2) =249a(3) =17395a(4) =862953a(5) =53074167a(6) =3105936858a(7) =181382499259
External references
- oeis: A219872