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

A233796

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

Terms

    a(0) =169840a(1) =7959956a(2) =365649436a(3) =16782644101a(4) =768927679996

External references