Number of (n+2) X 3 binary arrays avoiding patterns 001 and 101 in rows and columns.

Terms

a(0) =108a(1) =240a(2) =450a(3) =756a(4) =1176a(5) =1728a(6) =2430a(7) =3300a(8) =4356a(9) =5616a(10) =7098a(11) =8820a(12) =10800a(13) =13056a(14) =15606a(15) =18468a(16) =21660a(17) =25200a(18) =29106a(19) =33396a(20) =38088a(21) =43200a(22) =48750a(23) =54756a(24) =61236a(25) =68208a(26) =75690a(27) =83700a(28) =92256a(29) =101376