Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

A301969

Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =64a(1) =610a(2) =632a(3) =1156a(4) =2454a(5) =8705a(6) =33860a(7) =120603a(8) =444357a(9) =1715911a(10) =6574776a(11) =25055403a(12) =96049774a(13) =368934080a(14) =1415983660a(15) =5435511772a(16) =20873907896a(17) =80167521480a(18) =307889914336

External references