Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically.

A204493

Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically.

Terms

    a(0) =3971a(1) =339311a(2) =18296109a(3) =2046727035a(4) =208673819127

External references