Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

A207590

Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

Terms

    a(0) =6a(1) =36a(2) =60a(3) =144a(4) =324a(5) =756a(6) =1728a(7) =3996a(8) =9180a(9) =21168a(10) =48708a(11) =112212a(12) =258336a(13) =594972a(14) =1369980a(15) =3154896a(16) =7264836a(17) =16729524a(18) =38524032a(19) =88712604a(20) =204284700a(21) =470422512a(22) =1083276612a(23) =2494544148a(24) =5744373984a(25) =13228006428a(26) =30461128380a(27) =70145147664

External references