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

A234374

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

Terms

    a(0) =16584a(1) =372690a(2) =8280018a(3) =183669567a(4) =4070647527a(5) =90202925160

External references