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

A204494

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

Terms

    a(0) =3971a(1) =46458a(2) =699151a(3) =6047817a(4) =65606908a(5) =797822969a(6) =8067170432a(7) =86968465645a(8) =981144743357

External references