Number of ways to tile a fixed 3 X n square grid with 1 X 1, 2 X 2, and 1 X 2 tiles.

A226351

Number of ways to tile a fixed 3 X n square grid with 1 X 1, 2 X 2, and 1 X 2 tiles.

Terms

    a(0) =1a(1) =3a(2) =26a(3) =163a(4) =1125a(5) =7546a(6) =51055a(7) =344525a(8) =2326760a(9) =15709977a(10) =106079739a(11) =716273960a(12) =4836475953a(13) =32657123299a(14) =220509407586

External references