Number of nX7 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).

A229846

Number of nX7 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).

Terms

    a(0) =63a(1) =63291a(2) =31783299a(3) =17324310663

External references