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

A207393

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

Terms

    a(0) =8a(1) =64a(2) =200a(3) =643a(4) =2356a(5) =7561a(6) =23071a(7) =72410a(8) =223804a(9) =678174a(10) =2060069a(11) =6253794a(12) =18886989a(13) =56994221a(14) =172026022a(15) =518680170a(16) =1563104966a(17) =4710798095a(18) =14194683842a(19) =42764679095a(20) =128836561789a(21) =388135277342

External references