Number of tatami tilings of an 8 X n grid (with monomers allowed).

Terms

a(0) =1a(1) =34a(2) =821a(3) =852a(4) =922a(5) =1165a(6) =1404a(7) =1914a(8) =2562a(9) =4618a(10) =7450a(11) =14979a(12) =22803a(13) =38778a(14) =54826a(15) =85506a(16) =123690a(17) =191034a(18) =298131a(19) =470051a(20) =773762a(21) =1207994a(22) =1972850a(23) =3009562a(24) =4793090a(25) =7277059a(26) =11448307a(27) =17673010a(28) =27794938a(29) =43769170