Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.

Terms

a(0) =42a(1) =1764a(2) =252a(3) =420a(4) =672a(5) =1092a(6) =1764a(7) =2856a(8) =4620a(9) =7476a(10) =12096a(11) =19572a(12) =31668a(13) =51240a(14) =82908a(15) =134148a(16) =217056a(17) =351204a(18) =568260a(19) =919464a(20) =1487724a(21) =2407188a(22) =3894912a(23) =6302100a(24) =10197012a(25) =16499112a(26) =26696124a(27) =43195236a(28) =69891360a(29) =113086596