Number of 4 X (n+1) 0..1 arrays with every 2 X 2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..1 introduced in row major order.

A208086

Number of 4 X (n+1) 0..1 arrays with every 2 X 2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..1 introduced in row major order.

Terms

    a(0) =24a(1) =56a(2) =134a(3) =344a(4) =888a(5) =2318a(6) =6056a(7) =15848a(8) =41478a(9) =108584a(10) =284264a(11) =744206a(12) =1948344a(13) =5100824a(14) =13354118a(15) =34961528a(16) =91530456a(17) =239629838a(18) =627359048a(19) =1642447304a(20) =4299982854a(21) =11257501256a(22) =29472520904a(23) =77160061454a(24) =202007663448

External references