Number T(n,k) of tilings of a 3k X n rectangle with right trominoes.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =0a(8) =2a(9) =1a(10) =1a(11) =0a(12) =4a(13) =0a(14) =1a(15) =1a(16) =0a(17) =8a(18) =8a(19) =4a(20) =1a(21) =1a(22) =0a(23) =16a(24) =0a(25) =18a(26) =0a(27) =1a(28) =1a(29) =0