Number of 3-dimensional tilings of a 2 X 2 X n box using 1 X 1 X 1 cubes and trominos (L-shaped connection of 3 cubes).

A360064

Number of 3-dimensional tilings of a 2 X 2 X n box using 1 X 1 X 1 cubes and trominos (L-shaped connection of 3 cubes).

Terms

    a(0) =1a(1) =5a(2) =89a(3) =1177a(4) =16873a(5) =237977a(6) =3366793a(7) =47599097a(8) =673035625a(9) =9516252633a(10) =134553882441

External references