Number of nX3 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.

A198650

Number of nX3 0..6 arrays with values 0..6 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.

Terms

    a(0) =1a(1) =14a(2) =185a(3) =3904a(4) =98467a(5) =3050721a(6) =108395401a(7) =4339928301a(8) =188551345053

External references