Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

A222687

Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Terms

    a(0) =4a(1) =56a(2) =664a(3) =29770a(4) =419562a(5) =20259516a(6) =301760538a(7) =14776550335a(8) =223789472088

External references