4136257domain: NAppears in sequencesThe number of distinct lines defined by an n X n X n grid of points.at n=13A222267Number of 3Xn 0..2 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=10A222575