Number of tilings of a 4 X n rectangle using 2 X 2 tiles, right trominoes and dominoes.

A354012

Number of tilings of a 4 X n rectangle using 2 X 2 tiles, right trominoes and dominoes.

Terms

    a(0) =1a(1) =1a(2) =17a(3) =81a(4) =702a(5) =4623a(6) =35044a(7) =248045a(8) =1819731a(9) =13110984a(10) =95362462a(11) =690253391a(12) =5008926698a(13) =36300216768a(14) =263252448712

External references