Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

A204411

Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

Terms

    a(0) =34274a(1) =154938a(2) =781884a(3) =5597126a(4) =52039032a(5) =395943745a(6) =2826265830a(7) =26252359826a(8) =205479237126

External references