Number of 3Xn binary arrays without the pattern 1 1 0 diagonally, vertically, antidiagonally or horizontally.

A188608

Number of 3Xn binary arrays without the pattern 1 1 0 diagonally, vertically, antidiagonally or horizontally.

Terms

    a(0) =7a(1) =49a(2) =211a(3) =847a(4) =3282a(5) =12405a(6) =45860a(7) =167525a(8) =605878a(9) =2177496a(10) =7787333a(11) =27757367a(12) =98687854a(13) =350247594a(14) =1241371867a(15) =4395505741a(16) =15552531864a(17) =55000200159a(18) =194426956404a(19) =687105218857

External references