Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.

A207601

Number of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.

Terms

    a(0) =8a(1) =64a(2) =168a(3) =441a(4) =1995a(5) =9025a(6) =30400a(7) =102400a(8) =403520a(9) =1590121a(10) =5746377a(11) =20766249a(12) =78708504a(13) =298321984a(14) =1101003640a(15) =4063425025a(16) =15221477315a(17) =57019231369a(18) =211813620480a(19) =786839961600

External references