Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically.

A233483

Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically.

Terms

    a(0) =172952a(1) =8254896a(2) =386906152a(3) =18116531520a(4) =846914338316

External references