Number of tilings of a 3 X n rectangle using 2 X 2 tiles, right trominoes and dominoes.

A354011

Number of tilings of a 3 X n rectangle using 2 X 2 tiles, right trominoes and dominoes.

Terms

    a(0) =1a(1) =0a(2) =7a(3) =8a(4) =81a(5) =184a(6) =1051a(7) =3176a(8) =14609a(9) =50408a(10) =210903a(11) =773888a(12) =3102369a(13) =11711856a(14) =46045259a(15) =176114128a(16) =686258465a(17) =2640610128a(18) =10247733223a(19) =39540368248a(20) =153162778865a(21) =591718044968

External references