Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically.

A207486

Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically.

Terms

    a(0) =18a(1) =324a(2) =1014a(3) =2749a(4) =8808a(5) =26980a(6) =89417a(7) =292136a(8) =996484a(9) =3383013a(10) =11790326a(11) =41028862a(12) =145231303a(13) =513949716a(14) =1839937674a(15) =6589246547a(16) =23788589214a(17) =85938464486a(18) =312245147469

External references