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

A233603

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

Terms

    a(0) =15272a(1) =341849a(2) =7655432a(3) =171455430a(4) =3839022704a(5) =85958825311

External references